A and B can finish a piece of work in 15 days, B and C in 20 days C an – InterviewSolution

1.

A and B can finish a piece of work in 15 days, B and C in 20 days C and a in 30 days. how long will they take to finish it together? how long will it its take to finish the work alone?

Answer»

Answer:

45

Step-by-step EXPLANATION:

ADD and DIVIDING the SUMS

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