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March 29, 2017

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the sum of 2 numbers is 77. one number is 2 1/2 times as big as the other number.find the difference between the 2 addends.please show how you got your answer.

my answer is 72.6, am i right if not please tell me why and how.

  • aig math - ,

    the numbers are n and 5/2 n

    add them up to get 77:

    n + 5/2 n = 77
    7/2 n = 77
    n = 22

    the numbers are 22 and 55

  • math - ,

    Let the two numbers be x and 2.5x. Their difference is 1.5x

    3.5x = 77
    x = 22
    2.5x = 55
    The difference is 1.5x = 33

    Your answer is incorrect.

  • aig math - ,

    one number form 75 is 100

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