A can do a piece of work in 6 days. B can do it in 6 days. With the assistance of C they completed the work in 2 days. Find in how many days can C alone do it? Answers
A) 8 days	B) 2 days	C) 6 days	D) 7 days	E) 4 days

Rationale: "c = 1 / 2 - 1 / 6 - 1 / 6 = 1 / 6 = > 6 days answer : c"
Answer: C