A can do a piece of work in 20 days, B in 30 days, C in 60 days. Working together, they finish in:

A 8 days

B 10 days

C 12 days

D 15 days

✓ Correct Answer: Option B

Rate = 1/20+1/30+1/60 = (3+2+1)/60 = 6/60 = 1/10. Time = 10 days.

💡 Why is B) the correct answer?

The correct answer to the question "A can do a piece of work in 20 days, B in 30 days, C in 60 days. Working together, they finish in:" is Option B: 10 days.

The other options — A) 8 days, C) 12 days, D) 15 days — are incorrect for this Mathematics question. As explained above: Rate = 1/20+1/30+1/60 = (3+2+1)/60 = 6/60 = 1/10. Time = 10 days.

📚 About This Mathematics Practice Question

This 2-level Mathematics question from the Quantitative Reasoning topic is part of One Paper Preparation's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free Mathematics practice test or use flashcards for spaced repetition review.

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A can do a piece of work in 20 days, B in 30 days, C in 60 days. Working together, they finish in:

✓ Correct Answer: Option B

📚 About This Mathematics Practice Question

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