A and B separately do a work in 10 and 15 days respectively they work together for some days and then a completed the remaining work in 5 days for how many days Had A and B work together
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one day work of A= 1/10
one day work of B = 1/15
total work of both = (1/10+1/15)= 1/6
work done by A in remaining 5 days= 5/10= 1/2
so A and B together done 1/2 work so time required by both to done half work...6/2= 3
one day work of B = 1/15
total work of both = (1/10+1/15)= 1/6
work done by A in remaining 5 days= 5/10= 1/2
so A and B together done 1/2 work so time required by both to done half work...6/2= 3
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Answer:
A and B work together in 3 days
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