The value of q when q varies inversely with p is 2.
The formula that can be used to represent inverse variation is:
p = k/q
Where:
The first step is to determine the value of the constant of proportionality
k = p x q
k = 15 x 4 = 60
Given the value of the constant of proportionality, the value of q can now be determined.
30 = 60/q
q = 60 / 30
q = 2
To learn more about inverse proportion, please check: https://brainly.com/question/25748643
