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27 April, 10:30

If y varies directly as x and y = 20 when x = 6, what is the value of y when x = 24?

a.

36

b.

80

c.

30

d.

4

+1
Answers (1)
  1. 27 April, 13:45
    0
    The equation of that is y=kx

    Substitute it in and you get

    20=6k

    Divide 6 on both sides

    k=3 1/3

    Then since it asks what is the value of y when x is 24 use k in the equation

    y=3 1/3*24

    so y=80 is the answer
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