A sports equipment store sold ping pong rackets for a total of $588. If the average (arithmetic mean) price of a pair of rackets is $9.8, how many pairs were sold?  Choose the correct choice from the following:  A) 50  B) 60  C) 490  D) 500  E) 980

Rationale: "average price for a pair of rackets = $ 9.8 total cost = $ 9.8 * x = $ 588 x = 60 pairs were sold . answer : b"
Answer: B