Question

Metal Rewarded
If the sum of the digits of a two digit positive whole number is 8 and the tens' digit is three times the units' digit, then what is the two digit number?

Answer 1

Let:
a=ones digit

Then:
3a=tens digit

This is just from the problem. Also from the problem:
ones digit plus tens digit = a + 3a = 8
4a=8
a=2
3a=6

So the ones digit is 2, and the tens digit is 6.