Answer:
Step-by-step explanation:
Note: The difference should read 18 not 28, it must be a typo. In general such difference must be a multiple of 9.
Let the digits are x and y.
If the first digit is x and the second digit is y, then the number is 10x + y.
According to the question we have:
- x + y = 16
- 10x + y - 18 = 10y + x ⇒ 9x - 9y = 18 ⇒ x - y = 2
Add up the equations:
- x + y + x - y = 16 + 2
- 2x = 18
- x = 9
Find y:
The number is 97.
