a can do a piece of work in 10 days and B can do it in 15 days they started working together from the first in how many days they will finish the work
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A can do a piece of work in one day= 1/10
B can do a piece of work in one day=1/15
Work done by A and B in one day=1/10+1/15
=5/30
1 work done by A and B is=1/5/30
=30/5=6
They both can finish the work in 6 days
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A can do 1/10piece work in a day
B can do 1/15 piece work in a day
they together can do=1/10+1/15
=25/150=1/6
they can do 1/6piece work in1day
they can do 1 piece work in 6 days
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