Question

On a farm 2by7 of the cows were black, while the rest 40 were white. Find the total number of cow

Answer 1

Answer:

56

Step-by-step explanation:

let the total cows be x

2x/7 is the no. of black cows

so 2x/7 + 40 = total cows

2x/7 + 40 = x

40 = x - 2x/7

40 = (7x - 2x)/7

40 = 5x /7

(40 × 7)/ 5 = x

8 × 7 = x

56 = x