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MATH

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Coach Johnson is 10 years older than Tim. When Tim started football 3 years ago, Coach Johnson was twice his age. How old is Tim now?

  • MATH - ,

    Tim's current age -- x
    coach's current age -- x+10

    3 yrs ago, Tim was x-3
    3 yrs ago, coach was x+7

    (x+7) = 2(x-3)
    x+7 = 2x - 6
    13 = x

    Tim is now 13


    check: if Tim is 13, then coach is 23
    3 years ago, Tim was 10 , coach was 20
    Yes, he was twice as old then!

  • MATH - ,

    Tim would be 13 years old now coach johnson is 23 now

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