A and B can complete a work in 15 days and 10 days respectively. They…

Question

A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in :

Accepted Answer

Option C. 12 days. Answer & Solution Answer: Option C Solution: & ( A + B ) 's\, 1\, day's\, work & = 115 + 110 = 1/6 & Work\, done\, by\, A\, and\, B\, in\, 2\, days & = 1/6 × 2 = 1/3 & Remaining\, work & = 1 - 1/3 = 2/3 & Now,\, 115\, work\, is\, done\, by\, A\, in\, 1\, day & 2/3\, work\, will\…