The variable Z is directly proportional to X, and inversely proportional to Y. When X is 6 and Y is 3, Z has the value 6. What is the value of Z when X = 10, and Y = 8

Answer 1

Z = kX/Y

6 = k*6/3 = 2k

k=3

Z = 3X/y

Therefore, Z = 3(10)/8 = 30/8 = 15/4 = 3.75