A and B can do a work in 25 days and 10 days respectively. A starts the work and B joins him after 2 days. In how many days can they complete the remaining work?  Choose the correct choice from the following answers.
A) 4.28 days
B) 4.38 days
C) 5.28 days
D) 6.28 days
E) 2.28 days
Work done by A in 2 days = 2/5   Remaining work = 3/5   Work done by both A and B in one day = 1/25 + 1/10 = 7/50   Remaining work = 3/5 * 50/7 = 4.28 days.   4.28 daysNSWER:4.28 days
<result>A</result>
A and B can do a work in 25 days and 10 days respectively. A starts the work and B joins him after 2 days. In how many days can they complete the remaining work?