As constant of proportionality is given for A and B which are in direct proportion, we know
A1B1=A2B2=AB=5
A17.24=5 and A24.78=5
hence,
A1=5×7.24=36.2 and A2=5×4.78=23.9
Similarly,
P and Q are in inverse proportion having constant of proportionality 36.
P1×Q1=P2×Q2=P×Q=36
P1=364.5 and P2=361.8
P1=8 and P2=20