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Two workers can complete a job in 15 days and 20 days respectively. If they work

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Question: Two workers can complete a job in 15 days and 20 days respectively. If they work together for 5 days, how much of the job is left?

Options:

  1. 1/3
  2. 1/4
  3. 1/5
  4. 1/6

Correct Answer: 1/3

Solution: 

Worker 1\'s rate = 1/15, Worker 2\'s rate = 1/20. Combined rate = 1/15 + 1/20 = 7/60. In 5 days, they complete 7/12 of the job, leaving 5/12.

Two workers can complete a job in 15 days and 20 days respectively. If they work

Practice Questions

Q1
Two workers can complete a job in 15 days and 20 days respectively. If they work together for 5 days, how much of the job is left?
  1. 1/3
  2. 1/4
  3. 1/5
  4. 1/6

Questions & Step-by-Step Solutions

Two workers can complete a job in 15 days and 20 days respectively. If they work together for 5 days, how much of the job is left?
  • Work Rate – Understanding how to calculate the work rate of individuals and combine their rates to find the total work done.
  • Fraction of Work – Calculating the fraction of work completed and remaining after a certain period.
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