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 2 ays, can do the work alone in Pick one:	A) 10 days	B) 11 days	C) 15 days	D) 12 days	E) 18 days
work as x,x/2,x/3   ==(1/x+2/x+3/x)   =1/2==&gt;6/x=1/2   ==&gt;12   ANSWER 12 days
<result>D</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 2 ays, can do the work alone in