Question

The sum of the digits of a 2- digits number is 10. if we reverse the digits, the new number will be 54 more the original number. what is the original number?

Answer 1

According to the question

$a+b=10$

$10a+b-10b-a=54$

$a-b=6$

$a=6-b$

$a=8$, $b=2$

Then the reversed number is $28$