The number of cows on a farm increased by 60. Because of better food, the amount of milk from each cow went up from 12.8 liters per day to 15 liters per day on the average. How many cows are on the farm now if the farmer gets 1340 liters of milk more per day?

Step-by-step explanation:

Number of cows increased=60

Old quality of milk consumed=12.8litres

New Increase in milk consumed=15litres

Therefore the number of cows in the farm if the quality of milk is 1340litres=y

Therefore, 1cow = 15litres

y cows = 1340litres

Crossmultiply:

15litres*ycows=1340litres

Make y the subject of formula

y = 1340:15

y=89.33cows

Therefore, the number of cows on the farm if farmer gets 1340litres of milk would be 89cows.