On average, the boys in the class have 20 pencils and the girls have 38 pencils. If the overall class average is 30 pencils, what is the ratio of boys to girls in the class?  Choose the correct choice from the following answers.
A) 1 / 2
B) 2 / 3
C) 3 / 4
D) 4 / 5
E) 5 / 6

Rationale: ( 38 g + 20 b ) / ( g + b ) = 30 38 g + 20 b = 30 ( g + b ) 8 g = 10 b b / g = 4 / 5 the answer is d .
Answer: D