Question

3. Sum of two digits of a 2-digit number is 12. If the digits are reversed, the new number, so formed
increase by 36. Find the number.
umber so formed​

Answer 1

Answer:

let the digit at tens place be x and at units place be y

original no. = 10x + y

interchange no. = 10y + x

1st condition.

x + y = 12

2nd condition.

10x + y = 10y + x + 36

10x + y - 10y - x = 36