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5 March, 10:21

The sum of the ages of Michael and Savannah is 114 years. 7 years ago, Michael's age was 4 times Savannah's age. How old is Michael now?

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Answers (2)
  1. 5 March, 12:51
    0
    Micheal is 87 years old

    Step-by-step explanation:

    Let x be the age of micheal and y be the age of savannah

    x + y = 114

    seven years ago, micheal's age was 4 times savannahs'

    x - 7 = 4 * (y - 7)

    x - 7 = 4y - 28

    x = 4y - 28 + 7

    x = 4y - 21

    since we got x = 4y - 21 then we substitute in x + y = 114

    4y - 21 + y = 114

    5y - 21 = 114

    5y = 114 + 21

    5y = 135

    y = 27

    replace y in x + y = 114

    x + 27 = 114

    x = 114 - 27 = 87
  2. 5 March, 13:01
    0
    m = age of michael

    s = age of savannah

    m+s=114

    7 years ago:

    (m-7) = 4 (s-7)

    m+s=114

    m=4s-21

    (4s-21) + s=114

    5s=114+21=135

    s=135/5=27

    m=114-s=114-27=87

    Answer: now michael is 87.

    Savannah is 27
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