Question

9) The sum of the digits of a two digit number is 15 and if 9 is added to the number the digits are interchanged. Find the number.?

Answer 1

Answer:

Here is your answer mate. Mark me brainliest. Please

Answer 2

Step-by-step explanation:

sum of the digits = 15

10(15-x) + x = 150-10x +x

= 150-9x, (1)

10x + (15-x) = 10x+15-x = 15+9x (2)

Adding both equations we get,

150-9x + 9= 15+9x ,

Therefore, 150-15 +9 = 18 x,

Therefore, X = 144/18 = 8,

so the no. is 78 and it's reverse is 87,

I hope it helps,

Please mark as the brainliest answer.