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Nairaland Forum / Nairaland / General / Education / What Is The Total Weights Of The Animals In This Picture? (36889 Views)
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Re: What Is The Total Weights Of The Animals In This Picture? by phemmyfour: 2:00pm On Feb 13, 2015 |
a+b=10........eq1 a+c=20.........eq2 b+c=24.........eq3 Combine eq2 and eq3 Therefore b-a=4.......eq4 Now, combine eq1 and eq4 Therefore 2b = 14 b=7 a=3 c=17 Combine weight 7+3+17=27kg.......lobatan! |
Re: What Is The Total Weights Of The Animals In This Picture? by drey076(m): 2:02pm On Feb 13, 2015 |
husseinjnr:good 1 Like |
Re: What Is The Total Weights Of The Animals In This Picture? by Nobody: 2:02pm On Feb 13, 2015 |
Let D = Weight of the dog, C = Weight of the cat, and R = Weight of the rabbit Let X = their combined weight. Required: X = D + C + R Solution: We are given the following: C + R = 10..............(1) C + D = 24..............(2) D + R = 20..............(3) From (1) we have the following: C = 10 - R..............(4) Substituting (4) in (2) we have: (10 - R) + D = 24 ===>> D - R = 24 - 10 ===>> D - R = 14...........(5) Solving (3) and (5) simultaneously, we have the following: D + R = 20.............(2) D - R = 14.............(3) Adding (2) and (3) we will have: (D + D) + (R - R) = (20 +14) ====>> 2D = 34 Dividing through by 2 we have: D = 17...............(6) Substitute for D in (2) we have: 17 + R = 20 ===>> R = 20 - 17 Hence, R = 3........(7) Substituting for R in (1) we have: C + 3 = 10 ===>> C = 10 -3 = 7.........( Given that the combined weight is thus: X = D + C + R We have from (6), (7) and ( the following: X = 17 + 7 + 3 ===>> X = 27 Therefore their combined weight is 27 kg 1 Like |
Re: What Is The Total Weights Of The Animals In This Picture? by Nobody: 2:07pm On Feb 13, 2015 |
Set theory |
Re: What Is The Total Weights Of The Animals In This Picture? by Nobody: 2:08pm On Feb 13, 2015 |
Folksyharry: Straight forward without all this mathematics; use the 2nd picture and d 3rd picture to demystify d mystery. Simple 27kg The dog is 17kg Cat is 7kg And d Rabbit is 3kg |
Re: What Is The Total Weights Of The Animals In This Picture? by Youpele52: 2:20pm On Feb 13, 2015 |
This is how I did mine
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Re: What Is The Total Weights Of The Animals In This Picture? by musicwriter(m): 2:22pm On Feb 13, 2015 |
What this maths question also show is Nairalanders can lie!. So, because someone answered correctly, everybody now get the same answer?. No single wrong answer?. If a Nairalander tell you to COME you'd better RUN. |
Re: What Is The Total Weights Of The Animals In This Picture? by nanizle(m): 2:27pm On Feb 13, 2015 |
No need for long calculations. Simply add up the weights (10+20+24) That's 54kg (made up of 2 cats, two dogs and two rabbits) 54/2 = 27kg (1cat, 1dog and 1 rabbit) 5 Likes |
Re: What Is The Total Weights Of The Animals In This Picture? by teemy(m): 2:32pm On Feb 13, 2015 |
I did a simple figure 1,2,3 added together gives 54kg = combined weight of 2 rabbits + 2 cats + 2 dogs. Divided by 2 gives 27kg as answered by the algeraens. |
Re: What Is The Total Weights Of The Animals In This Picture? by kilokeys(m): 2:34pm On Feb 13, 2015 |
dechandel:if i catch u. u wanna start this engineering / law duel? parralel turning, broaching and drilling vs u yelling my name as i land my gavel in ur supreme immaculate court |
Re: What Is The Total Weights Of The Animals In This Picture? by palabest: 2:35pm On Feb 13, 2015 |
lifestyle1: The most brilliant of all the solutions!!!! |
Re: What Is The Total Weights Of The Animals In This Picture? by aycd44(m): 2:39pm On Feb 13, 2015 |
27kg |
Re: What Is The Total Weights Of The Animals In This Picture? by Alexbond(m): 2:47pm On Feb 13, 2015 |
d total weight of d animals in d "picture" is equivalent to d weight of d picture. no calculations required :Pd total weight of d animals in d "picture" is equivalent to d weight of d picture. no calculations required |
Re: What Is The Total Weights Of The Animals In This Picture? by Nobody: 2:53pm On Feb 13, 2015 |
bros e never reach to comot CV na husseinjnr: 2 Likes |
Re: What Is The Total Weights Of The Animals In This Picture? by Hysmady(m): 2:54pm On Feb 13, 2015 |
Misogynist2014:Who? Ur fellows? |
Re: What Is The Total Weights Of The Animals In This Picture? by Tonei: 2:59pm On Feb 13, 2015 |
Jesus is the answer |
Re: What Is The Total Weights Of The Animals In This Picture? by Misogynist2014(m): 3:01pm On Feb 13, 2015 |
Hysmady:He asked for collective weight, not individual weight. |
Re: What Is The Total Weights Of The Animals In This Picture? by Usman212s: 3:06pm On Feb 13, 2015 |
C + R=10kg D + R= 20kg D + C= 24kg Adding equation 1,2&3 2C+2D+2R =10+20+24 C+D+R = 54/2 = 27kg |
Re: What Is The Total Weights Of The Animals In This Picture? by Oiselenjakhian(m): 3:11pm On Feb 13, 2015 |
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Re: What Is The Total Weights Of The Animals In This Picture? by aniagoluaustin(m): 3:13pm On Feb 13, 2015 |
30 |
Re: What Is The Total Weights Of The Animals In This Picture? by MistadeRegal(m): 3:19pm On Feb 13, 2015 |
jacksparrow1207: Im com bright after im dull finish |
Re: What Is The Total Weights Of The Animals In This Picture? by Nobody: 3:32pm On Feb 13, 2015 |
Re: What Is The Total Weights Of The Animals In This Picture? by Timileyin(m): 3:35pm On Feb 13, 2015 |
omo, i have been calculation all day its 27 i think joor |
Re: What Is The Total Weights Of The Animals In This Picture? by follygabby: 3:39pm On Feb 13, 2015 |
since 99% of you said 27, so why do i stress myself to calculate it.? abeg d answer is 27 |
Re: What Is The Total Weights Of The Animals In This Picture? by Agbalanze(m): 3:39pm On Feb 13, 2015 |
Let cat be C Let dog be D Let Rabbit be R C+R=10..... EQU1 D+R=20..... EQU2 D+C=24..... EQU3 D+C+R=? C=10-R.... EQU4 D=20-R.... EQU5 SUBSTITUTE EQU4 AND EQU5 INTO EQU3 D+C=24 20-R+10-R=24 30-2R=24 -2R=24-30 -2R=-6 2R=6 R=6/2 R=3 (Rabbit) SUBSTITUTE R INTO EQU1 C+3= 10 C=10-3=7 C=7 (Cat) SUBSTITUTE R INTO EQU2 D+R=20 D+3=20 D=20-3 D=17 (Dog) TOTAL= D+C+R= 17+7+3= 27kg |
Re: What Is The Total Weights Of The Animals In This Picture? by femi4love(m): 3:47pm On Feb 13, 2015 |
27 |
Re: What Is The Total Weights Of The Animals In This Picture? by serege(m): 3:55pm On Feb 13, 2015 |
kilokeys:oboy see kakulation. menn u try o |
Re: What Is The Total Weights Of The Animals In This Picture? by Nobody: 3:57pm On Feb 13, 2015 |
Yungwizzzy: 1 Like |
Re: What Is The Total Weights Of The Animals In This Picture? by Hawlahscho(m): 4:21pm On Feb 13, 2015 |
kilokeys: Na ur handwriting be that |
Re: What Is The Total Weights Of The Animals In This Picture? by jasonkid007: 4:35pm On Feb 13, 2015 |
make dem enter soup pot first.ehen i go come siddon weigh them wella |
Re: What Is The Total Weights Of The Animals In This Picture? by Henrolla(m): 4:36pm On Feb 13, 2015 |
husseinjnr:u sabi book o, thank God for people like u on NL |
Re: What Is The Total Weights Of The Animals In This Picture? by BMZK: 4:38pm On Feb 13, 2015 |
Visual method
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