Question

a number consists of two digits whose sum is 12 if 18 is added to the number it's digits get reversed the number is​

Answer 1

Answer:

57

Step-by-step explanation:

Let the two digits of the number be a (Ten's digit) and b (Unit digit)

a+b=12  --------1

Adding 18 to the number

10a+b+18=a+10b  --------2

Solving equation 2

9a−9b=−18      so,  a−b=−2 --------3

On solving equations 1 and 3 we get

2a=10, so  a=5  and  b=12-a=7

The number is 57

And 57+18=75 reversed digits