4. The second of two numbers is 4 times the first. Their sum is 50. Find the larger number. *

Question

4. The second of two numbers is 4 times the first. Their sum is 50. Find the
larger number. *

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Trung Dũng 4 years 2021-07-28T20:38:07+00:00 1 Answers 24 views 0

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  1. ngocdiep
    0
    2021-07-28T20:39:09+00:00
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    Let x = the 1st number, and y = the 2nd number.

    Equation 1: The second of two numbers is 4 times the first ==> y = 4x

    Equation 2: Their sum is 50 ==> x + y = 50

    Substitute y = 4x into Equation 2, you get

    x + 4x = 50

    5x = 50

    x = 50 / 5 = 10

    y = 4x = 4(10) = 40

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