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16 October, 07:05

The sum of 2 numbers is 76. 1/3 of the first number plus 1/2 of the second number is 34. What are the two numbers? What is the difference between the second number and first number?

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Answers (2)
  1. 16 October, 08:20
    0
    Ok so we have 2 equations here ...

    x + y = 76

    1/3x + 1/2y = 34

    First solve for x in the 1st equation ...

    x + y = 76

    x = 76 - y

    Now substitute 76-y for x in the 2nd equation ...

    1/3x + 1/2y = 34

    1/3 (76-y) + 1/2y = 34

    76/3 - 1/3y + 1/2y = 34

    -1/3y + 1/2y = 34 - 76/3

    -2/6y + 3/6y = 34 - 25 1/3

    1/6y = 8 2/3

    y = 8 2/3 : 1/6

    y = 8 2/3 * 6

    y = 52

    Now substitute 52 into the 1st equation for y

    x + y = 76

    x + 52 = 76

    x = 76 - 52

    x = 24

    The 2 numbers are 24 and 52.

    The difference between the numbers is

    52 - 24 = 28
  2. 16 October, 08:49
    0
    28 difference and the numbers are 13 and 12 121 21 212 12 55 65 545 46 54 6 5 6 6666666 777.0-0000000
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