Question 313415
let the digit in the yens place be x
and the digit in the units place be y.
the number will be 10x+y
..
the sum of the digits will be x+y
..
10x+y= 18 +x+y
10x-x=18
9x=18
x=2
..
x=y-3 ( tens digit is 3 less than units digit)
plug the value of x
so y=5
The number is 25