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Two workers can complete a job in 20 days and 30 days respectively. If they work

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Question: Two workers can complete a job in 20 days and 30 days respectively. If they work together for 10 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 = 1/20, Worker 2\'s rate = 1/30. Combined rate = 1/20 + 1/30 = 1/12. In 10 days, they complete 10/12 = 5/6 of the job, leaving 1/6.

Two workers can complete a job in 20 days and 30 days respectively. If they work

Practice Questions

Q1
Two workers can complete a job in 20 days and 30 days respectively. If they work together for 10 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 20 days and 30 days respectively. If they work together for 10 days, how much of the job is left?
  • Work Rate – Understanding how to calculate the work rate of individuals and their combined work rate.
  • Fraction of Work Done – Calculating the fraction of work completed over a given time period.
  • Job Completion – Determining how much of a job remains after a certain amount of work has been completed.
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