Study the following table and answer the question:-

Number of cars sold by dealers P, Q, R, S and T during first six months of 2022.

What is the difference of average of cars sold by all dealers in January to cars sold by Q in March (approx.)?

49

Total cars sold in Jan. = 620 + 600 + 640 + 520 + 548 = 2928

Avg. = 585.6

Cars sold by Q in March = 635

Difference = 635 - 585.6 = 49.4 or approx. 49