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Nairaland Forum / Entertainment / Forum Games / Are You A Mathematician? (1399 Views)
Any Mathematician In The House...try Solving This Trick Question. / Any Mathematician In The House: Try Solvin This; (2) (3) (4)
Are You A Mathematician? by Nobody: 7:16am On Nov 17, 2014 |
What is the combined weight of the dog, cat and rabbit?
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Re: Are You A Mathematician? by Basildvalour(m): 8:00am On Nov 17, 2014 |
17+7+3=27 |
Re: Are You A Mathematician? by johnbush(m): 8:39am On Nov 17, 2014 |
combined weight of the rabbit, cat and dog is 27kg |
Re: Are You A Mathematician? by Nobody: 3:18am On Nov 22, 2014 |
rabbit = r cat = c dog = d r + c = 10 d + r = 20 d + c = 24 r+c+d+r+d+c = 10+20+24 2r + 2c + 2d = 10 + 20 + 24 r + c + d = (10 + 20 + 24 )/2 = 5 + 10 + 12 = 27 27kg |
Re: Are You A Mathematician? by Nobody: 9:46am On Nov 22, 2014 |
goofyone:Hmmm different figures and workings but the same answers...crosscheck your solvings r=rat c=cat d=dog r+c=10...eqn1 r+d=20...eqn2 c+d=24...eqn3 r+c+d=? From eqn1, r=10-c substitute r for (10-c) into eqn2 (10-c)+d=20 -c+d=20-10 d-c=10...eqn4 Subtract eqn4 from eqn3 (d+c=24)-(d-c=10) (d-d)+c--c)=24-10 c+c=14 c=7 From eqn1...r+c=10 r+7=10 r=3 From eqn2...r+d=20 3+d=20 d=17 Total= 7+3+17=27 |
Re: Are You A Mathematician? by Nobody: 10:51pm On Nov 23, 2014 |
Valued: Even though absolutely correct, that's just too long for a solution. Simple is always better. |
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