Question

y varies jointly with p and q. When p = 2 and q = 3, y = 48. Find y when p = 3 and q = 4.

a) y=12
b)y=24
c)y=48
d)y=96

Answer 1

y = kpq where k is held constant.
48 = k(2)(3)
48 = 6k
k = 8
y = 8(3)(4)
y = 96