Question

sum of the digits of a 2digit no is 11 .the given number is less than the number obtained by interchanging the digits by 9.find the number...

Ans is 56 need explanation..!!
answer fast..!!​

Answer 1

Answer and Step-by-step explanation:

x and y will be the digits

First Number: 10x + y

After Changing  Digits: 10y + x

10y + x - 10x - y = 9

9y - 9x = 9

Equation 1: y - x = 1

Equation 2: y + x = 11

Equation 1 + Equation 2 = 2y = 12

x = 5

y = 6

Number: 56.