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a and b can do a work in 18 days b and c can do it in 24 days a and c do it in 36 days. in how many days will a b and c finish it working together and separately?
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1 Answer

a=15  days                        15+3=18

b=3  days                        3+21=24

c=21 days                   15+21=36

all together 39 days
by
edited

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