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How Many Units Of Electricity Goes For 1000 Naira. / How Can I Do Away With My Wife? ( Correct Or Divorce Her) / Lady Gives Her Neighbor's Son N500 To Buy Her Airtime, See What He Did With It (2) (3) (4)
First Correct Answer Get 1000 Naira Airtime by pimpchi(m): 4:15pm On Mar 06, 2021 |
Solve and show workings
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Re: First Correct Answer Get 1000 Naira Airtime by shamsin6300(m): 4:21pm On Mar 06, 2021 |
I will need part of the money to buy pen and exercise book to solve this down. |
Re: First Correct Answer Get 1000 Naira Airtime by dejt4u(m): 5:31pm On Mar 06, 2021 |
pimpchi: (a) Given: Speed for the journey = 380 km Total time taken for the journey = 4hours The journey was in two parts. First part of the journey was on the motorway and the second part was on the country road Let x and y represents the distance and time taken respectively for the journey in the first part (on the motorway); Therefore, the speed on the motorway is calculated as x ÷ y = 110 km/h x = 110y ...... Eqn 1 To get equation 2, let's find the expression for speed on the country road Distance on the country road = 380km - x Time spent on the country road = 4hrs - y Therefore, the speed on the country road = (380 - x) / (4- y) = 70km/h, 380 - x = 70(4 -y), 380 - x = 280 - 70y, 380 - 280 = x - 70y, x - 70y = 100 ....Eqn 2 Therefore, these are the simultaneous equations x = 110y ...Eqn 1 x - 70y = 100 ...Eqn 2 (b) Solving the equations; Sub for x in eqn 2 using eqn 1, x - 70y = 100, 110y - 70y = 100 40y = 100 y = 100/40 = 2.5 hours sub for y in eqn 1, x = 110y, x = 110 (2.5), x = 275km Therefore the distance covered on the motorway is 275km @pimpchi Feel free to ask questions. |
Re: First Correct Answer Get 1000 Naira Airtime by Chapter1vs6(m): 5:42pm On Mar 06, 2021 |
I couldn't even get past speed 110km/h
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Re: First Correct Answer Get 1000 Naira Airtime by pimpchi(m): 6:33pm On Mar 06, 2021 |
dejt4u: Wrong |
Re: First Correct Answer Get 1000 Naira Airtime by Nobody: 10:11pm On Mar 06, 2021 |
pimpchi: He's right. To simplify the solution, if you work out 380= 110y + 70(4-y); where y = amount of time spent on the motorway, you get 275km (2.5hours × 110km/h) on the motorway and 105km (1.5hours × 70km/h on the country road); which is what he gave. His derivation of the two equations is also correct. |
Re: First Correct Answer Get 1000 Naira Airtime by dejt4u(m): 10:46pm On Mar 06, 2021 |
pimpchi:lol. the solution is what I have provided for you |
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