Question

Sum of the digit of a number of two digit is 8 when we interchange the digit. We see the the difference between the numbers is 18 find the orignal number.

Answer 1

let two digit no be XY

X+ Y = 8

XY - YX = 18

10X + Y - 10 Y - X= 18

9X -9Y = 18

X-Y = 2

X+ Y= 8

2X = 10
X=5

Y = 3

So 53 or 35