Question

The sum of the digits of a 2 digits number is 11 . If the digits are reversed, is less than the original number by 27. Find the original number

Answer 1

let unit digit=x

so tens digit=11-x

Number=10 (11-x)+x

Acc. to que.

10x+11-x=10 (11-x)+x-27

9x+11=110-10x+x-27

9x+11=83-9x

9x+9x=83-11

18x=72

x=72÷18

x=4