The average weight of 10 persons increases by 7.2 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?	Select
A) 120 kg
B) 130 kg
C) 137 kg
D) 190 kg
E) none

Rationale: "solution total weight increased = ( 10 x 7.2 ) kg = 72 kg . weight of new person = ( 65 + 72 ) kg = 137 kg . answer c"
Answer: C