Question

sum of the digits of a two number is 9 the number obtained by interchanging the digits exceeds the given number by 27 find the number ​

Answer 1

Let tens digit no. be x and unit digit no be y

x+y= 9. equation 1

10y+x +27 = 10x +y

= 9y -. 9x = -27

= y-x = -3. equation 2

On Solving eq 1 and eq 2.

= 2y=6. y=3

putting value of y in eq x= 6

The number is 63 or 36