help me please i am so cinfused ay this point

Question

The variable is directly proportional to , and inversely proportional to .  When  is 15 and  is 14,  has the value 3.2142857142857.

What is the value of  when  24, and  21

Answer 1

The variable names are missing in this problem, but if can go out on a limb and make some assumptions:

If what is actually says is, "The variable X is directly proportional to Y and inversely proportional to Z," then we can write the equation X = K*Y/Z (1)

The, if Y is 14 and Z is 15, X is 3.2142857142857.

Plugging into the equation above, you can solve for K

To answer the final question, plug in K, Y = 24, and Z = 21.Solve for X