+231 Suppose x is directly proportional to y, but inversely proportional to z. If x=3 when y=6 and z=4, then what is z when y=3?
+23246 If x is directly proportion to y but inversely proportional to z, then the formula is: x = k · y / z.
Since x = 3 when y = 6 and z = 4: 3 = k · 6 / 4 ---> 12 = k · 6 ---> k = 2.
So, the formula is: x = 2 · y / z.
What is z when y = 3?
To figure this out, you'll need to know the value of x ...
