there are 20 players on a rugby team . if the average weight of the players is 180 pounds , what will be the new average height if a 210 pound player will join the team ?
Choose the correct choice from the following options: A) 185 B) 183.22 C) 184.96 D) 181.43 E) 182.78

Rationale: ( sum of the 20 weights ) / 20 = 180 sum of the 20 weights = 3600 new sum = 3600 + 210 = 3810 new average = 3810 / 21 = 181.43 ans : d
Answer: D