A and B can do a piece of work in 12 days, B and C can do the work in 15 days while C and A can do it in 20 days. How long will they take,working together to completethe work
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Answer:
they will take 10 days to complete the work
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According to questions,
A worked for 5 days and
B worked for 7 days
If A and B Work together for 5 days
they would complete 4×5=20 units
remaining work = 48−20
=28 units
Now B has to work for 2 more days and if he does it along
with C for 2 days. Then, both would complete (3×2)=6
units of work.
work left = 28−6=22 units
Now C completes in 13−2=11 days
So, C works 22/11 = 2 units / day
(efficiency) and B+Cdoes 3 units / day (efficiency)
So B does 1 unit/day
B will complete the whole work in 48= 48 days
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