Mathematician Over To You? - Education (4) - Nairaland
Nairaland Forum › Nairaland General › Education › Mathematician Over To You? (27749 Views)
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| Re: Mathematician Over To You? by efemena5050(m): 1:08pm On Aug 17, 2025 |
Stainlezzking:. |
| Re: Mathematician Over To You? by PrinceAsanike: 1:08pm On Aug 17, 2025 |
This is very simple, and I do not know why you are calling mathematician, any person can solve it. However, I am surprised at some people missing the answer. The answer, unarguebly is N20. The first time he made N10 profit, likewise the second time, making it a total of N20 profit. So easy. Let assume he borrowed money to buy in the first time, he would just collect hiis N10 profit and return N60 to the creditor. The same for second business |
| Re: Mathematician Over To You? by SpecialAdviser(m): 1:08pm On Aug 17, 2025 |
CJStarz:You are a business illiterate |
| Re: Mathematician Over To You? by femi4: 1:08pm On Aug 17, 2025 |
Thunderfayamods:Hope this helps 20 dolls Buy for 60 → cash –60 Sell for 70 → cash –60 + 70 = +10 Buy back for 80 → cash +10 – 80 = –70 Sell for 90 → cash –70 + 90 = +20 |
| Re: Mathematician Over To You? by joluwaseyi866: 1:09pm On Aug 17, 2025 |
Says it all
|
| Re: Mathematician Over To You? by Sammy0787: 1:09pm On Aug 17, 2025 |
Another way of analysing it, is that he started a business with $60 dollars He made profit of $10 and he later borrowed $10 (i e from $70-$80) He made another profit of $10 And now his Capital is $80 His loan is $10 That means he has made profit of $20 |
| Re: Mathematician Over To You? by xristos(m): 1:09pm On Aug 17, 2025*. Modified: 4:06pm On Aug 17, 2025 |
He made 20. So u have 100k in ur hand. U want to invest so u go and buy an iPhone 7 for 100k so u can resell. U resell it for 110k. Now u think u have 10k gain if u take out ur capital. But u want to buy the next phone to sell and it now costs 120k U go and borrow 10k from ur friend to complete the money and buy the new phone. Then resell it for 130k After selling for 130k, u have to return the 10k u borrowed from ur friend. Meaning u have 120k in ur hand |
| Re: Mathematician Over To You? by TheBizGenius: 1:09pm On Aug 17, 2025 |
Imagine. I am so sure people who are saying $0 or $10 are not goods traders in real life. Lol. This is why Ibo boys in container shops seem to do better financially in real life than the extremely educated folks in Nigeria. For people who don't know, this is not a BUSINESS question. It's a TRADING question. Don't overthink it; it's just money in, money out. Any trader who engages in selling things daily knows it's simply $20. |
| Re: Mathematician Over To You? by IEJames(m): 1:10pm On Aug 17, 2025 |
He traded twice He made 10 dollars profit from the first He also made 10 dollars from the second TOTAL PURCHASE 60 & 80 -- 140 TOTAL SALES 70 & 90 -- 160 Net profit 160 - 140 ---- 20 dollars Seperate transactions, seperate profits. No confusion! |
| Re: Mathematician Over To You? by friday2011(m): 1:10pm On Aug 17, 2025 |
20$ bro, opening balance is $60 plus additional $10 for the second purchase. closing balance is 90$ $90 minus $70 Profit....$20 |
| Re: Mathematician Over To You? by Dzzzz: 1:11pm On Aug 17, 2025 |
That’s no business.. |
| Re: Mathematician Over To You? by irepnaija4eva(m): 1:12pm On Aug 17, 2025 |
Nicoddemus:The only right answer here... Others above na big dolo. . |
| Re: Mathematician Over To You? by PuZZyNegro: 1:12pm On Aug 17, 2025 |
Juliearth:Following your calculations, he made $10 when he sold for $70. Now, he went to buy back the same product but this time, he added the $10 profit to the $60 initial capital and borrowed $10 to purchase the item, leaving him with no initial gain anymore but $10 debt. The he sold the product for $90. He will first remove the $10 borrowed, leaving him with $80. The total profit will now be $20. The reason is because, if he set out with $60 and is returning with $80, he's had additional $20 irrespective of how many transactions were performed to achieve that. |
| Re: Mathematician Over To You? by Princewell2012(m): 1:14pm On Aug 17, 2025 |
wwwihy:You're wrong sir, yes he made 10 buks on his first purchased, but he added the ten bucks because of the inflation to buy it back at 80 then selling it for 90. So he is only making Ten dollars only instead of 20. So had it been he still buys it at 70 then he will be making $20 altogether. It is actually a very logic question. |
| Re: Mathematician Over To You? by chasteman(m): 1:16pm On Aug 17, 2025 |
He made. $0 |
| Re: Mathematician Over To You? by kingyang: 1:16pm On Aug 17, 2025 |
muyico:Alright, let's break down the problem step by step to understand how much profit the man made from these transactions involving the goat. ### Understanding the Problem We have a sequence of buying and selling actions: 1. **First Purchase:** Buy a goat for \$60. 2. **First Sale:** Sell the goat for \$70. 3. **Second Purchase:** Buy the goat again for \$80. 4. **Second Sale:** Sell the goat again for \$90. Our goal is to calculate the total profit made from these transactions. ### Calculating Profit Step by Step **Profit** in such transactions is calculated by considering the money spent (costs) and the money earned (revenue). The total profit is the total revenue minus the total cost. Let's list out the inflows (money received) and outflows (money spent): 1. **First Purchase:** - Action: Buy goat - Amount: \$60 (outflow) 2. **First Sale:** - Action: Sell goat - Amount: \$70 (inflow) 3. **Second Purchase:** - Action: Buy goat again - Amount: \$80 (outflow) 4. **Second Sale:** - Action: Sell goat again - Amount: \$90 (inflow) Now, let's sum up the inflows and outflows separately. **Total Outflows (Money Spent):** - First purchase: \$60 - Second purchase: \$80 - **Total spent:** \$60 + \$80 = \$140 **Total Inflows (Money Earned):** - First sale: \$70 - Second sale: \$90 - **Total earned:** \$70 + \$90 = \$160 **Total Profit:** - Profit = Total earned - Total spent - Profit = \$160 - \$140 = \$20 ### Verifying with Individual Transactions Sometimes, it's helpful to look at the profit from each buy-sell pair to ensure our answer makes sense. 1. **First Buy-Sell Cycle:** - Bought for \$60, sold for \$70. - Profit: \$70 - \$60 = \$10 2. **Second Buy-Sell Cycle:** - Bought for \$80, sold for \$90. - Profit: \$90 - \$80 = \$10 **Total Profit:** - \$10 (first cycle) + \$10 (second cycle) = \$20 This matches our previous calculation, confirming that the total profit is indeed \$20. ### Potential Missteps It's easy to get confused when the same item is bought and sold multiple times. One might mistakenly think to subtract the selling prices from the buying prices in sequence without considering that each sale is independent of the previous purchase after the first sale. For example, someone might think: - First sale: \$70 - \$60 = \$10 profit. - Then buys again for \$80: thinks they're now at a loss because \$80 is more than \$70, but this isn't correct because the first transaction is already closed with a \$10 profit. - Then sells for \$90: \$90 - \$80 = \$10 profit. - Total: \$10 + \$10 = \$20. This approach also leads to the correct answer, but it's crucial to recognize that each buy-sell pair is independent in terms of calculating profit. ### Alternative Approach: Net Cash Flow Another way to look at it is to track the net cash flow at each step, starting from \$0. 1. **Start:** \$0 2. **Buy for \$60:** -\$60 3. **Sell for \$70:** -\$60 + \$70 = +\$10 4. **Buy for \$80:** +\$10 - \$80 = -\$70 5. **Sell for \$90:** -\$70 + \$90 = +\$20 At the end, the net is +\$20, which is the total profit. ### Conclusion After carefully analyzing the transactions through multiple methods—summing total inflows and outflows, calculating profit per buy-sell cycle, and tracking net cash flow—we consistently arrive at the same conclusion. **Final Answer:** The man made a total profit of **\$20**. |
| Re: Mathematician Over To You? by xristos(m): 1:17pm On Aug 17, 2025*. Modified: 4:06pm On Aug 17, 2025 |
joluwaseyi866:AI still needs some human intelligence |
| Re: Mathematician Over To You? by Lanre1st(m): 1:18pm On Aug 17, 2025 |
He make $80. His profit is $20 |
| Re: Mathematician Over To You? by efemena5050(m): 1:18pm On Aug 17, 2025 |
The question is incomplete and ambiguous Now assuming he never borrowed to finance his deficit Total revenue after gross deduction = Adjusted net profit will be 10$ Let's assume he borrowed to finance his deficit (10 $) then grossprofit will be 20 dollars But in all total grossprofit-cost of goods sold Will be 10$ Since no follow up of how the 10$ deficit came up from where hence he was able to buy the goat at 80$ In all his net income from the business is 10$ If u must contend this then u should come prepared |
| Re: Mathematician Over To You? by unscripted(m): 1:19pm On Aug 17, 2025 |
Jashub:he made 20$, he invested 60$ at the begining , later added 10$ , that makes it 70 $ his final return was 90$ , so he made 20$ at the end |
| Re: Mathematician Over To You? by 081dot: 1:19pm On Aug 17, 2025 |
He made nothing, not until he buys again at a cheaper price and was able to sell at higher rate and that will be his gain. 0$ If you are doing business like this, your advantages is that as the economy rises you rise with it. But with the illustration above, he went to sort out 10$ again and gained that 10$ back. After he returned it he will be back to the capital with no gains. Ire ooo |
| Re: Mathematician Over To You? by Ezzymadu(m): 1:19pm On Aug 17, 2025 |
Stainlezzking:You don't understand the question we are talking of profit at hand at the end of trading he even invest extra 10k to buy it back so at the end he made 10k if not nothing at all |
| Re: Mathematician Over To You? by Nobody: 1:25pm On Aug 17, 2025 |
Nicoddemus:You're not an igbo man, bro. Le ya otiowa Quick ledger: Buy 1: cash −60, inventory +1 Sell 1: cash +70 → net +10, inventory 0 Buy 2: cash −80, inventory +1 Sell 2: cash +90 → net +10, inventory 0 Cash increased by $20 overall, so total profit is $20. Another way Kwa, Compare totals: Total spent = 60 + 80 = 140 Total received = 70+90=160. Net = 160−140=20. Another way to reason it. Start with $C cash, no goat. End with no goat (sold it) and cash $C + 20. The fact that the first $10 became part of the second purchase price doesn’t change profit. it just changes how the purchase was funded. |
| Re: Mathematician Over To You? by jrobbins: 1:26pm On Aug 17, 2025 |
He made nothing. No profit no loss |
| Re: Mathematician Over To You? by Princewell2012(m): 1:26pm On Aug 17, 2025 |
lezan:What are you saying sir, that I used my former gain add it up to buy back, so what is my gain? Remember this time the price have changed. In fact if I removed my expenses, I will have nothing left with me. But on the book I can just say I have made ten dollars since I have decided to sell it at $90 . |
| Re: Mathematician Over To You? by Mandesz(m): 1:27pm On Aug 17, 2025 |
muyico:He made nothing i.e Break-evem |
| Re: Mathematician Over To You? by IMPARTIAL: 1:28pm On Aug 17, 2025 |
You are all wrong! He made 30 bucks. |
| Re: Mathematician Over To You? by dgitrader(m): 1:28pm On Aug 17, 2025 |
. |
| Re: Mathematician Over To You? by Nobody: 1:28pm On Aug 17, 2025 |
Just ask A. I. It is highly likely that those who gave the correct answers to that did not even make use of their mind to really solve that . A. I was used . Welcome to the world of AI |
| Re: Mathematician Over To You? by Mandesz(m): 1:28pm On Aug 17, 2025 |
He made nothing. Yes Phnuel007: |
| Re: Mathematician Over To You? by franugo(m): 1:29pm On Aug 17, 2025 |
Tboy222:He absolutely is not....let's look at it this way, take the total cost price and selling price for both transactions separately. Total cost is 60+80 = 140 Total selling price is 70+90 = 160 Total profit is $20 |
| Re: Mathematician Over To You? by Princewell2012(m): 1:29pm On Aug 17, 2025 |
adexbols:But there was an inflation along the lines, so which is going to pay for the difference. Remember this is $10 dollars increase in his second purchase? |
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