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A and B combinely can do a work in 4 days. If A alone can
do a piece of work 6 days. In how many days B alone can do?
a) 8 days b) 6 days c)10 days d) 12 days
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Answer Posted / ashish madhavi
Hey buddies no need for any type of calculation this
problem can b solved orally
METHOD:
to any type of an problem on WORK
first collect the numbers in the question and find the
common multiple
for eg in our above question (4,6) common multiple = 12
so suppose there are 12 files to b completed
A alone can do the work in 6 days
therefore /day A completes 2 files
A & B together completes the work in 4 days
therefore /day they complete 3 files
therefore as A completes 2 files /day B completes 1 file/day
so B alone requires 12 days to complete the work (1 file
each day)
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