A can do a piece of work in 10 days and B can do the same work in 20 days. With the help of C, they finish the work in 5 days. How long will it take for C alone to finish the work?

A can do a piece of work in 10 days and B can do the same work in 20 days. With the help of C, they finish the work in 5 days. How long will it take

A can do a piece of work in 10 days and B  can do the same work in 20 days. With the help of  C, they finish the work in 5 days. How long will it take for C alone to finish the work?

  • A. 15 days 
  • B. 10 days 
  • C. 35 days 
  • D. 20 days 
 

The correct answer is option D. 20 days. Can you explain this answer in the comments?


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1. How to Prepare for Quantitative Aptitude for CAT by Arun Sharma

2. Ace Quantitative Aptitude For Banking and Insurance

3. Quantitative Aptitude Quantum CAT by Sarvesh K Verma

4. Quantitative Aptitude for Competitive Examinations by R.S. Aggarwal


A can do a piece of work in 10 days and B  can do the same work in 20 days. With the help of  C, they finish the work in 5 days. How long will it take for C alone to finish the work?




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About the Author

This is Ashutosh Nautiyal. Currently, I'm pursuing my graduation from Bipin Tripathi Kumaon Institute Of Technology, Dwarahat, Almora and my branch is Civil Engineering. I have done my schooling at Omkarananda Saraswati Nilayam, Rishikesh.

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