A and B can do a piece of work in 6 days. With the help of C they finish the work in 3 days. C alone can do that piece of work in?
Choose the correct choice from the following answers:  A) 40 days  B) 16 days  C) 6 days  D) 5 days  E) 40 days
6 days   6 days   6 days = 1/3 – 1/6 = 1/6 =&gt;6 days
<result>C</result>
A and B can do a piece of work in 6 days. With the help of C they finish the work in 3 days. C alone can do that piece of work in?