Question

A number had two digits whose sum is 9. If 9 is added to this number, digits
get interchanged. Find the number?

Answer 1

Answer:

Let the digits are x and y.

therefore,

x + y = 9

and

xy + 9 = yx

The number is 45.

EXPLANATION:

The sum of the number is 9.

4 + 5 = 9.

If 9 is added then,

45 + 9 = 54.

Digits are interchanged.

Hope it helps..

FOLLOW ME...

Answer 2

The original no. is 45

Please mark it as brainliest