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11 August, 13:33

The sum of two numbers is 30 and their difference is 20

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Answers (2)
  1. 11 August, 16:14
    0
    X=25, Y=5; the numbers are 25 and 5

    Step-by-step explanation:

    Let the numbers be X and Y

    X - Y = 20; from statement 2.

    X = 20+Y

    But

    X + Y = 30 from statement 1;

    Meaning

    20 + Y + Y = 30

    20 + 2Y = 30

    2Y = 10

    Y=5

    X=20 + Y

    X = 20 + 5 = 25

    X=25, Y=5
  2. 11 August, 16:32
    0
    5 and 25
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