Question

The digit of a two digit number differ by 2 . If the digit are interchanged and resulting number is added to original number. we get 88,the original number is

Answer 1

Let the unit digit no is. X

And tens place is Y

No will be. 10Y+X

On interchaing the digit

10x+Y

Acc/Q

10Y+X-10X-Y=2

9(Y-X)=2

Y-X=2/9.......i

again acc/ques

10Y+X+2/9=88

10Y+X=88-2/9

10Y+X=790/9.......ii

On solving the edition i&ii we get

X=-70/9

Y=8

now put the value of X&Y in Original no.

then, we get 790/9.