Work done by A in 1 day =1∕32 Work done by B in 1 day =1∕48 Calculation: Work done by A and B together in 1 day =1∕32+1∕48 ⇒(3+2)∕96=5∕96 Work done by A and B together in 8 days =8×5∕96=40∕96=5∕12 Remaining work =1−5∕12=7∕12 60% of remaining work =60∕100×7∕12=7∕20 Work done by B in 1 day =1∕48 Time taken by B to finish 7∕20 of work =(7∕20)∕(1∕48) ⇒7∕20×48=16