Question

The ten's digit of a two digit number is thrice the unit digit. The new number obtained by interchanging the digits is 54 less than the original number . Find the original number​

Answer 1

Let the number is xy.

x = 3y.

(10x + y) - ( 10y+ x) =54.

9x - 9y = 54.

x -y = 6.

3y -y =6

2y =6

y= 3

x =9.

Original number is = 10 * 9 + 3 =93.