Question

Four-fifth of a number is more than three-fourth of the number by 4. Find the number.

Answer 1

Let us consider the number as ‘x’

So, Three-fourth of the number is 3x/4

Fourth-fifth of the number is 4x/5

4x/5 – 3x/4 = 4

By taking LCM of 5 and 4 is 20

(16x – 15x)/20 = 4

By cross-multiplying we get,

16x – 15x = 4(20)

x = 80

∴ The number is 80.