Question

Marty is 3 years younger than 6 times his friend warren’s age. The sum of their ages is 18. How old is warren?

-3
-15
-8
-18

Answer 1

Warren is 3 years old

Explanation:

Marty - m

Warren - w

m + w = 18

m = 6w - 3

Substitute:

(6w - 3) + w = 18

6w - 3 + w = 18

7w - 3 = 18

7w = 18 + 3

7w = 21

w = 21 ÷ 7

w = 3