Question
Download Solution PDFIf A and B together can do a piece of work in 20 days, and A alone can do the same work in 30 days, then in how many days can B alone complete the same work?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven
A and B together can do a piece of work in 20 days.
A alone can do the same work in 30 days.
Formula used:
Work = Efficiency × Time
Calculation
A and B together can do a piece of work in 20 days
Part of work A and B can do in 1 day = 1/20
A alone can do the work in 30 days
Part of work A can do in 1 day = 1/30
∴ Part of work B alone can do in a day = 1/20 - 1/30 = 1/60
∴ B alone can do the work in 60 daysLast updated on Jun 25, 2025
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