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3 December, 07:02

One number is two times another. The sum of the number is 90 what are the two numbers

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Answers (2)
  1. 3 December, 07:14
    0
    One number is 2 times another

    x=2y

    sum is 90

    x+y=90

    easy

    x=2y

    sub 2y for x

    2y+y=90

    3y=90

    divide both sides by 3

    y=30

    sub back

    x=2y

    x=2 (30)

    x=60

    the numbers are 60 and 30
  2. 3 December, 07:27
    0
    1st number is x

    other number is 2 times = 2x

    sum of the numbers is 90: x + 2x = 90

    Solve for x

    x + 2x = 90

    3x = 90

    x = 30

    First number = 30

    second number = 2x = 2 (30) = 60
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