M varies directly as n and inversely as p. if M=3, when n=2,and p=1, find M in terms of n and p

Answer 1

m = kn/p
3 = k*2/1 --> k = 3/2

m = 3n / 2p

Answer 2

If M varies directly as R, what is the equation of variation if M = 3 and R = 1?