A takes twice as much time as B or thrice as much time to finish a piece of work. Working together, they can finish the work in 6days. B can do the work alone in?	Choose the correct choice from the following options.
A) 18
B) 20
C) 25
D) 32
E) 36
Suppose A,B,C takes x,x/2,x/3 hours to finish the work   Then, 1/x + 2/x + 3/x = 1/6   6/x = 1/6   x = 36   Answer is 36
<result>E</result>
A takes twice as much time as B or thrice as much time to finish a piece of work. Working together, they can finish the work in 6days. B can do the work alone in?