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4 June, 10:07

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

+1
Answers (1)
  1. 4 June, 10:52
    0
    Warren is 3 years old

    Step-by-step 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
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