y varies inversely as x means y=kx
y varies directly as x means y=k/x
p varies directly as q and inversely as y
p=(qk)/y
0.064=(16k)/5
find k
times both sides by 5
0.32=16k
divide both sides by 16
0.02=k
p=(0.02q)/y
q=12
y=10
p=(0.02*12)/10
p=(0.24)/10
p=0.024
