Question

The sum of the digits in a two digit number is 10. If the digits are reversed, the new number will be 72 more than the original number. What is the original number?

Answer 1

ok so here's how I solved this problem: There are only a few numbers that have their digits add to 10, right? like 19, 28, 37, 46 and so on. So pick a number that works, switch the digits, and see if it subtracts to be 72.