william is six years younger than three times alex’s age. william is 33 years old. How old is Alex?

Answer 1

Let A = Alex

Let W= William

Given: W + 6 = 3A

Given: W = 33

Thus:

39=3A

A = 13

Alex is 13.

Tip:

Be sure not to do W - 6 just because it says younger here. You need to equalize the two statements to use the equal sign. Alternatively, you could do W = 3A -6 but that is less intuitive for most.

Good Luck!