A can finish a piece of work in 5 days. B can do it in 25 days. They work together for four days and then A goes away. In how many days will B finish the work?	Select the correct option.
A) 3 days  B) 1 day  C) 2 days  D) 4 days  E) 5 days
4/5 + (4 + x)/25 = 1 =&gt; x = 1 day   Answer: 1 day
<result>B</result>
A can finish a piece of work in 5 days. B can do it in 25 days. They work together for four days and then A goes away. In how many days will B finish the work?