Question

3 cows and 9 calves can graze a field in 10 days. 2 cows and 10 calves can graze the same field in 11 days. Then 5 cows
and 10 calves can graze 9 Times the same field in how many days? It is known that, once grazed; the grass does not
grow back​

Answer 1

Step-by-step explanation:

we have to fix the work,

take LCM for gives days, = 110 total work(grass)

3Cow + 9 calves = 2 cow + 10 calves

cow 1

------- = ------

calf 1

9times the same files means 9 times the work

[ 5(1)+10(1)]x = 110*9 = 990

15x = 990

x= 66 days