the average of 7 consecutive numbers a , b , c , d , e , f and g is 9 . what percent of g is a ? Choose the correct answer:
A) 42.0	B) 48.0	C) 50.0	D) 52.2	E) 54.0

Rationale: explanation : in such a case the middle number ( d ) is the average ∴ d = 9 and a = 6 and g = 12 required percentage = 6 / 12 x 100 = 50.0 answer : option c
Answer: C