a and b take 4 hours b and c take 5 hours and c and d take 7/2 days complete work how many days compelete three work. ans 12.4/23 plz give me ans with solution plz plz plz....
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A can do a piece of work in 40 days
Work of A in 1 day=1/40
Work of A in 5 days=5/40=1/8
1/8th part of work is done by A
Remaining work=(1−81)=87
7/8th part is done by B in 21 days
Total work will be done by B in =8721=721×8=24days
Work done by B in one day=1/24
Work done by A and B together in one day will be(401+241)
(1203+5)=1208=151
A and B will take 15 days to complete the work together.
Step-by-step explanation:
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