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3 September, 10:37

If w varies jointly as x and y when w = 12, x = 2, and y = 18, what is the value of y when w = 16 and x = 6?

8/9

13.5

8

+5
Answers (2)
  1. 3 September, 10:54
    0
    The answer is eight
  2. 3 September, 11:03
    0
    Joint variation means that w=kxy where k is constant.

    Finding k:

    12=k*2*18

    12=36k

    k=1/3

    Now plug in second set of values

    16 = 1/3*6*y

    16=2*y

    y=8

    Final answer: 8
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