Question

Four fifth of a number is greater than three fourth of a number by 4.find the number.

Answer 1

let the number be x

4/5 of x - 4 = 3/4 of x

4x/5 - 4 = 3x/4

4x/5 - 3x/4 = 4

(16x - 15x) / 20 = 4

x = 80