Grass in lawn grows equally thick and in a uniform rate.It takes 40 days for 40 cows and 60 days for 30 cows to eat the whole of the grass.How many days does it take for 20 cows to do the same?
A. 125
B. 110
C. 120
D. 130
Answer:C
Grass in lawn grows equally thick and in a uniform rate.It takes 40 days for 40 cows and 60 days for 30 cows to eat the whole of the grass.How many days does it take for 20 cows to do the same?
A. 125 B. 110 C. 120 D. 130
Explanation: g - grass at the beginning