Question

the sum of the digits of a 2- digit number is 9 . on reversing its digits , the new number obtained is 45 more than the original number . Find the number

Answer 1

Answer:

27 is the correct answer

Answer 2

Answer:

Original number have:-

Let y be in unit position

And x be in the tenth position

Original Number 10x + y

Reversed number 10y + x

10y + x = 10x + y +45

9y - 9 x = 45

y --x = 5

x + y = 9

y = 7 and x = 2

Original Number = 27.