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In a grass field, If there are 40 cows, they could eat for
40 days. If there are 30 cows, they could eat for 60 days.
Than if 20 cows, How much day they could eat?
a) 60 b) 80 c)55 d)50
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Answer Posted / praveen
let c be the quantity eaten by each cow per one day...
let g be the grass quantity...
then from the first statemet 40*(c)*40=g
then c = g/(1600)
now consider 20 cows...each day they will take 20*(c)grass
i.e., 20*(g/1600)=g/80...
=> each day they complete g/80th part.
therefore they can complete in 80 days...
now come to the second statement...
for 30 cows...30(g/1600)...t.e., they can complete in
160/3 days ...so second statement is wrong...
| Is This Answer Correct ? | 3 Yes | 2 No |
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