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19 December, 20:19

The sum of two numbers is 18. Three times the greater number exceeds four times the smaller number by 5. Find the numbers

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Answers (2)
  1. 19 December, 20:48
    0
    6 1/8 and 11 7/8

    Step-by-step explanation:

    Just use algebra. x+y is equal to 18. 3x=4y+5. Then you substitute the value x for y by dividing by three. From there it is just computation
  2. 19 December, 22:43
    0
    The numbers are 11 and 7

    Step-by-step explanation:

    Let the numbers be P and V

    Let P be the greater number and V be the smaller number.

    From the question, the sum of the numbers equals 18 i. e

    P + V = 18

    Also from the question,

    We were told that three times the greater number exceeds four times the smaller number by 5 i. e

    3P = 4V + 5

    P = (4V + 5) / 3

    Substituting the value of P into equation (1), we obtain:

    P + V = 18.

    (4V + 5) / 3 + V = 18

    Multiply through by 3 to express in linear form, we have:

    4V + 5 + 3V = 54

    Collect like terms

    4V + 3V = 54 - 5

    7V = 49

    Divide both side by the coefficient of V i. e 7

    V = 49/7

    V = 7

    P + V = 18

    P = 18 - V

    P = 18 - 7

    P = 11

    The numbers are 11 and 7
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