A and B can do a work in 5 days and 10 days respectively. A starts the work and B joins him after 3 days. In how many days can they complete the remaining work?
Choose the correct choice from the following choices.
A) 4/3 days B) 2 days C) 8 days D) 3 days E) 9 days
Work done by A in 3 days = 3/5   Remaining work = 2/5   Work done by both A and B in one day = 1/5 + 1/10 = 3/10   Remaining work = 2/5 * 10/3 = 4/3 days.   4/3 daysnswer: 4/3 days
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A and B can do a work in 5 days and 10 days respectively. A starts the work and B joins him after 3 days. In how many days can they complete the remaining work?