A can do a piece of work in 5 days, b can do it in 6 days, if c who can do it's in 12 days, joins them. How long willing they take to do the work?
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Answer:
2.22 days
Step-by-step explanation:
the work and be completed by-
A in 5 days
B in 6 days
C in 12 days
if they work together they will complete the work in- inverse of(1/5+1/6+1/12)
20/9
2.22
hope u understood
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