Question

7. If y varies jointly with x and z, and y = 24

when x = 4 and z = 3, what is the value of y
when x = 12 and z = 4?
=

Answer 1

Explanation:

Using formula y=kxz

so,

24=k*4*3

k=2

so if we put x=12 and z=4,

y=2*12*4

y=48