A and B can do a work in 5 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?	Pick one:	A) 6 days	B) 2 days	C) 8 days	D) 3 days	E) 9 days
Work done by A in 2 days = 2/5   Remaining work = 3/5   Work done by both A and B in one day = 1/5 + 1/10 = 3/10   Remaining work = 3/5 * 10/3= 
<gadget id="calculator">3/5 * 10/3</gadget>
<output>2</output>
2 days.   Answer: 2 days
<result>B</result>
A and B can do a work in 5 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?