A and B can complete a work in 15days and 10day. They started doing the work together but after 2days B had to leave and A alone completed the remaining work. The whole work was completed in?	Pick
A) 10days B) 12days C) 15days D) 8days E) 16days
A+12days 1day work = 1/15 + 1/10 = 1/6   Work done by A and 12days in 2days = 1/6 * 2 = 1/3   Remaining work = 1-1/3 = 2/3   Now 1/15 work is done by A in 1day   2/3 work will be done by A in 15*2/3= 
<gadget id="calculator">15*2/3</gadget>
<output>10</output>
10days   Total time taken= 10+2= 
<gadget id="calculator">10+2</gadget>
<output>12</output>
12days   Answer is 12days
<result>B</result>
A and B can complete a work in 15days and 10day. They started doing the work together but after 2days B had to leave and A alone completed the remaining work. The whole work was completed in?