Solve the problem below involving Combined Variation P vavies directly as of and the square of ir and inversely as s.

a) write the equation of the relation.
b.) find k if p=40 when q =5, r=4 and s= 6 c) find p when q=8, r=6 and 5= 9
d) find s when p=10, "q=5 and r=2​