If A, B and C together can finish a piece of work in 4 days. A alone in 6 days and B in 18 days, then C alone can do it in?
Pick:
A) 1
B) 7
C) 8
D) 9
E) 36
C = 1/4 - 1/6 – 1/18 = 1/36 =&gt; 36 days'   Answer: 36
<result>E</result>
If A, B and C together can finish a piece of work in 4 days. A alone in 6 days and B in 18 days, then C alone can do it in?