A and B together can do a work in 6 days. If A alone can do it in 10 days. In how many days can B alone do it?
Choose the correct answer:	A) 10	B) 15	C) 77	D) 55	E) 21
1/6 – 1/10 = 1/15   =&gt; 15   Answer: 15
<result>B</result>
A and B together can do a work in 6 days. If A alone can do it in 10 days. In how many days can B alone do it?