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In a pasture, the grass grows at an even rate. 40 cows can completely eat the grass in 40 days, if there are 30 cows the grass last fot 60 days, for how long it is sufficient for 20 cows
1) 80
2) 90
3) 100
4) 120
5) none
Answer:
40 cow can complately eat the grass in 40 days it means there is 40 * 40 = 1600 cow are able to eat the food
for 20 cow = 1600/20 = 80 Days Ans
for 20 cow = 1600/20 = 80 Days Ans
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