SOLUTION: Let y vary jointly as x and the cube of z and inversely as the square of w. What is the affect on y if x increases by 20%, z is doubled and w is halved.

Question 1033943: Let y vary jointly as x and the cube of z and inversely as the square of w. What is the affect on y if x increases by 20%, z is doubled and w is halved.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Literal translation for the first sentence:

The second sentence asks for these changes:

Number     Should be changed to
x           1.2x
z            2z
w           (1/2)w

You will make reference to the original equation as you work through the changed formula.
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