Answer:
22
Explanation:
TR1 = P1 x Q1 = 8 x 64 = 512
TR2 = P2 x Q2 = 10 x 60 = 600
MR = (TR2 – TR1)/(Q2 – Q1) = (600 – 512)/(64 – 60) = 22
6.6m questions
8.8m answers