Question

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

Answer 1

Let the number be a

According to question

4a/5 - 3a/4 = 4

=> (16a - 15a) /20 = 4

=> a/20 = 4

=> a = 80

Required number = 80

Answer 2

Let the number be a  

According to question  

4a/5 - 3a/4 = 4

=> (16a - 15a) /20 = 4

=> a/20 = 4

=> a = 80

Required number = 80