Question

if p and q vary directly with each other, then find the value of q when p=7 and the constant of variation 1/6

Answer 1

p=kV where k is constant
7= q*1/6
q=42

Answer 2

Since p and q vary directly with each other, let's assume the constant of variation to be k.
we can write the formula as
p = k*q

since p = 7 and k = 1/6
we have,
7 = q*(1/6)
that will give
q = 7*6
q = 42