A can do a piece of work in 4 days. B can do it in 8 days. With the assistance of C they completed the work in 2 days. Find in how many days can C alone do it?  Select.
A) 8 days B) 2 days C) 6 days D) 7 days E) 4 days
C = 1/2 - 1/4 - 1/8 = 1/8   =&gt; 8 days   8 daysnswer: 8 days
<result>A</result>
A can do a piece of work in 4 days. B can do it in 8 days. With the assistance of C they completed the work in 2 days. Find in how many days can C alone do it?