A and B can do a piece of work in 3 days, B and C in 4 days, C and A in 6 days. How long will C take to do it?	Pick.
A) 23 days
B) 16 days
C) 11 days
D) 24 days
E) 35 days
24 days   24 days   2c = ¼ + 1/6 – 1/3 = 1/12   c = 1/24 =&gt; 24 days
<result>D</result>
A and B can do a piece of work in 3 days, B and C in 4 days, C and A in 6 days. How long will C take to do it?