A and B together can do a work in 7 days. If A alone can do it in 56 days. In how many days can B alone do it? Choose the correct choice from the following answers:
A) 11	B) 8	C) 21	D) 20	E) 25
8   8   1/7 â€“ 1/56 = 1/8 =&gt; 8
<result>B</result>
A and B together can do a work in 7 days. If A alone can do it in 56 days. In how many days can B alone do it?