one-fourth of a two digit number exceeds its one fifth by 3 what is the difference between the digits of that number

Question

aptitude maths questions

Answer 1

Let x represent the digit, then

(1/4)x-(1/5)x=3

(5/20)x-(4/20)x=3

(1/20)x=3

x=60

the two-digit number is 60 and the difference between the digits, (6-0), is 6.