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sharaont
Lv 6
sharaont asked in Science & MathematicsMathematics · 1 decade ago

Amy is twice as old as Bill. Five yrs ago, she was 3 times as old as Bill was then. How old is Bill now?

6 Answers

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  • ♫ Ashish ♫
    1 decade ago
    Favorite Answer

    Hey good question..

    Suppose Amy's age = A and Bill's age = B

    So, A = 2B

    And, (A-5) = 3(B-5)....five years ago.

    Substituting A in second equation, 2B-5 = 3B-15, we get B = 10

    Thus, Bill is 10 now.

    Thanx...good luck !!

  • sv
    Lv 7
    1 decade ago

    Bill is (3*5 -- 5)/(3 -- 2) yrs = 10 yrs and amy 20 yrs

    5 yrs ago 20 -- 5 = 3 (10 -- 50

  • spoofer
    1 decade ago

    Bill is 10 year old and Amy is 20 now.

    Let x= age of Bill now, y= age of Amy now

    we have a system of two equations

    y=2x

    y-5= 3=(x-5)

    solve for x and y

  • Shelby
    Lv 6
    1 decade ago

    Bill 5

    Amy 15

    bill 10

    Amy 20

    (answer = bill is 10)

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  • it's over ♥
    1 decade ago

    amy is 20

    bill is 10

  • Jerome J
    Lv 7
    1 decade ago

    A = 2B

    (A - 5) = 3(B - 5)

    (2B - 5) = 3(B - 5)

    2B - 5 = 3B - 15

    15 - 5 = 3B - 2B

    10 = B

    B = 10 years (age of Bill now)

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