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RRB NTPC Time and Work — practice questions

Explore 5 free Time and Work questions in RRB NTPC Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Time and Work questions and exercises with answers

Showing questions 1–5 of 5.

RRB NTPC · Match Daily Work RatesRead the answer and worked solution →RRB NTPC · Combined Work DaysRead the answer and worked solution →A finishes a task in 10 days and B in 15 days. How many days if they work together?Read the answer and worked solution →12 workers finish a job in 8 days. In how many days can 16 workers finish the same job?Read the answer and worked solution →RRB NTPC · Combined Working DaysRead the answer and worked solution →

Worked practice questions

RRB NTPC · Match Daily Work Rates

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Matching pairs
  1. Left
    Finishes job in 6 days
    Right
    1/6 of job per day
  2. Left
    Finishes job in 3 days
    Right
    1/3 of job per day
  3. Left
    Finishes job in 10 days
    Right
    1/10 of job per day
  4. Left
    Finishes job in 15 days
    Right
    1/15 of job per day
Instructions
Match days per job to the daily job fraction

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RRB NTPC · Combined Work Days

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Matching pairs
  1. Left
    10 days & 10 days
    Right
    5 days together
  2. Left
    12 days & 6 days
    Right
    4 days together
  3. Left
    20 days & 20 days
    Right
    10 days together
  4. Left
    60 days & 30 days
    Right
    20 days together
Instructions
Match each item to its correct pair

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A finishes a task in 10 days and B in 15 days. How many days if they work together?

  1. 5 days
  2. 7 days
  3. 6 days
  4. 8 days
Show answer and solution

Correct answer: C. 6 days

Combined rate = 1/10 + 1/15 = 5/30 = 1/6 work per day. Total time = 6 days.

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