Question

the sum of the digits of a two digit number is 9 . If 45 it added to the number, the digits are interchanged. Find the number.​

Answer 1

Answer:

99 is the correct answer

Answer 2

Answer:

let one digit be X and other Y

X+Y = 9. ------------ (1)

ATQ

10X + Y +45 = 10Y + X

9y-9x = 45 -------------(2)

by eliminating 2 from 1

we will get y = 7

and x = 2

so number is 27