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21 September, 18:02

Y varies jointly as x and z, and y = 32 m, x = 6 m, and z = 8 m. what is the value of y when x = 5 m and z = 12 m?

a. 90 m

b. 4 m

c. 40 m

d. 9 m

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Answers (1)
  1. 21 September, 18:29
    0
    As x = 5 & z=12,

    2/3 = y / (xz) = y / (5*12)

    = y/60

    so y / 60 = 2/3

    y = (2*60) / 3

    = 40
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