If 3/p=6 & 3/q=18 then p-q=?  Choose the correct choice from the following answers
A) 5 / 24	B) 6 / 24	C) 7 / 24	D) 8 / 24	E) 1 / 3

Rationale: "p = 3 / 6 , q = 3 / 18 = > q = 1 / 6 therefore p - q = ( 1 / 2 ) - ( 1 / 6 ) = 1 / 3 answer : e"
Answer: E