if M partly varies as N and partly varies inversely as T when M is equal to 15 N=2,T=0.25, M=10, N=6, T=0.5 . find the relationship between M,N and T
maybe it means
M = k N + c/T
15 = k *2 + c /.25
10 = k *6 + c/.5
45 = 6 k + 12 c
10 = 6 k + 2 c
--------------------
35 k = 10 c
c = 3.5 etc