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Home › GRE › GRE Quant - Work, Rate and Time

GRE Quant - Work, Rate and Time — GRE Questions & Practice

Practise 508 GRE Quant - Work, Rate and Time questions from GRE for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on GRE Quant - Work, Rate and Time — with answers

Try each question first, then open the answer. Explanations are included.

1. A worker can complete a task in 7 days. What percentage of the task is completed after 1 day(s) of work?

  1. A12.3
  2. B19.3
  3. C14.3
  4. D13.3
Show answer

Answer: C

Fraction completed = Worked days / Total days = 1/7 = 14.3%.

2. A worker can complete a task in 13 days. What percentage of the task is completed after 1 day(s) of work?

  1. A8.28
  2. B7.7
  3. C12.7
  4. D6.57
Show answer

Answer: B

Fraction completed = Worked days / Total days = 1/13 = 7.7%.

3. A worker can complete a task in 9 days. What percentage of the task is completed after 3 day(s) of work?

  1. A27.26
  2. B33.8
  3. C38.52
  4. D33.3
Show answer

Answer: D

Fraction completed = Worked days / Total days = 3/9 = 33.3%.

4. A worker can complete a task in 27 days. What percentage of the task is completed after 23 day(s) of work?

  1. A74.95
  2. B95.19
  3. C85.2
  4. D72.46
Show answer

Answer: C

Fraction completed = Worked days / Total days = 23/27 = 85.2%.

5. Worker A can complete a job alone in 15 days, and Worker B can complete the same job alone in 18 days. If they work together, how many days will it take to complete the job?

  1. A7.68
  2. B8.18
  3. C7.83
  4. D8.22
Show answer

Answer: B

Combined time = (A x B)/(A + B) = (15 x 18)/(15 + 18) = 8.18 days.

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