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Suppose that y varies jointly with w and x and inversely with z and y = 24 when w = 8, X= 9 and z = 6. Write the equation that models the relationship. Then find y when w = 2, X= 20 and z = 8.

User Jefftopia
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We would have the following:


24=(8\cdot9)/(6)\cdot2

From this, we will have the following expression:


z=2\cdot(w\cdot x)/(y)

Now, we determine the values after replacing the ones given:


8=2\cdot(2\cdot20)/(y)\Rightarrow y=(4\cdot20)/(8)\Rightarrow y=10

The value of y is 10.

User Akash Preet
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