IBPS PO

Time & Work Questions for IBPS PO: Attempt Free Quiz

Time & Work Questions for IBPS PO are one of the most scoring topics in the Quantitative Aptitude section. You can improve this topic by practising free quizzes, topic-wise practice sets, mock tests, available on trusted banking exam platforms. These questions test concepts like work efficiency, men-days-hours, alternate days concept, pipes and cisterns, and time calculation. In this blog, you’ll get an exam-level quiz, important formulas, shortcut tricks, and expert preparation tips.

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Time & Work Practice Quiz with Answer Key: IBPS PO Prelims Exam-Level Questions

Here is a free Time & Work Questions for IBPS PO quiz based on the latest IBPS PO Prelims exam pattern. These questions cover Work Efficiency, Men-Days-Hours, Alternate Days, Pipes & Cisterns, and Combined Work. Attempt the quiz first and then verify your answers with the detailed explanations given below.

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IBPS PO Prelims: Time & Work Practice Set

Directions (Q1–Q10)Read each Time & Work / Pipes & Cisterns question carefully and choose the correct option. Each correct response carries +2 marks and each incorrect response carries −0.5 marks.

Q1. A can complete a piece of work in 12 days, while B can complete the same work in 18 days. They start working together, but A leaves after 4 days. In how many more days will B finish the remaining work?

Correct Answer: B) 8 days
Explanation: Together, A and B complete 1/12 + 1/18 = 5/36 per day. In 4 days they complete 5/9. Remaining work = 4/9. B alone takes (4/9) ÷ (1/18) = 8 days.

Q2. 12 men can complete a work in 20 days by working 8 hours a day. How many men are required to complete the same work in 12 days by working 10 hours a day?

Correct Answer: C) 16
Explanation: For the same work, Men × Days × Hours is constant. 12×20×8 = M×12×10, so M = 16.

Q3. A is 40% more efficient than B. If B alone can complete a work in 28 days, in how many days can A complete the same work?

Correct Answer: B) 20 days
Explanation: A's efficiency is 140% of B's. Time is inversely proportional to efficiency, so A's time = 28/1.4 = 20 days.

Q4. A alone completes a work in 15 days, while B alone completes it in 10 days. Working together, in how many days will they complete the work?

Correct Answer: B) 6 days
Explanation: Combined rate = 1/15 + 1/10 = 1/6. Therefore they complete the work in 6 days.

Q5. 15 workers can complete a project in 24 days by working 8 hours daily. If they work 10 hours daily, how many days will they take to complete the same project?

Correct Answer: B) 19.2 days
Explanation: With workers unchanged, Days × Hours is constant. 24×8 = D×10, so D = 19.2 days.

Q6. A can finish a work in 8 days and B can finish the same work in 12 days. They work on alternate days, starting with A. In how many days will the work be completed?

Correct Answer: B) 9½ days
Explanation: In 2 days they complete 1/8 + 1/12 = 5/24. After 8 days, 20/24 = 5/6 is done. On Day 9, A completes 1/8, taking total work done to 23/24. The remaining 1/24 is completed by B on Day 10 in (1/24) ÷ (1/12) = 1/2 day. Total = 9½ days.

Q7. A, B, and C can complete a work individually in 20, 30, and 60 days respectively. If they work together, how many days will they take?

Correct Answer: C) 10 days
Explanation: Combined rate = 1/20 + 1/30 + 1/60 = 1/10, so time = 10 days.

Q8. Pipe A fills a tank in 12 hours, while Pipe B fills it in 18 hours. If both pipes are opened together, how much time will they take to fill the tank?

Correct Answer: B) 7.2 hours
Explanation: Combined rate = 1/12 + 1/18 = 5/36 tank per hour. Time = 36/5 = 7.2 hours.

Q9. Pipe A fills a tank in 10 hours, while Pipe B empties it in 15 hours. If both pipes are opened together, how much time will the tank take to fill completely?

Correct Answer: C) 30 hours
Explanation: Net rate = 1/10 − 1/15 = 1/30 tank per hour. Therefore the tank fills in 30 hours.

Q10. Two pipes can fill a tank in 20 hours and 30 hours respectively. A third pipe can empty the tank in 60 hours. If all three are opened together, how much time will they take to fill the tank?

Correct Answer: B) 15 hours
Explanation: Net rate = 1/20 + 1/30 − 1/60 = 1/15 tank per hour. Therefore, time = 15 hours.

Quiz Summary

Attempted

Correct

Wrong

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Final Score: 0.00

Time & Work Questions for IBPS PO: Understanding the Exam Trend

In recent IBPS PO exams, Time & Work Questions for IBPS PO have become more application-based instead of focusing only on direct formula questions. Candidates are expected to solve real exam-style problems by applying concepts quickly and accurately.

Most questions are based on:

Work Efficiency & Wages – Understanding the relationship between work rate and time.
Men-Days-Hours – Solving questions using the M₁ × D₁ × H₁ = M₂ × D₂ × H₂ concept.
Alternate Days – Calculating total work when workers perform on alternate days.
Pipes & Cisterns – Questions based on inlet, outlet, and combined efficiency.

Tip: If a Time & Work question takes more than 60 seconds during the IBPS PO Prelims exam, skip it and move to the next one. Return to it later if time permits.

Core Conceptual Guide: Time & Work Formulas & Shortcuts

Before attempting Time & Work Questions for IBPS PO, revise these important concepts. A strong understanding of these basics will help you solve questions faster and avoid calculation mistakes in the exam.

Concept	Formula
Efficiency	Work ÷ Time
Time	Work ÷ Efficiency
Combined Efficiency	Sum of Individual Efficiencies
Men-Days-Hours	M₁ × D₁ × H₁ = M₂ × D₂ × H₂
Remaining Work after Replacement	Remaining Work = Initial Work − Completed Work

Strategy Checklist to Solve Time & Work Questions for IBPS PO

Scoring well in Time & Work Questions for IBPS PO is all about choosing the right method and avoiding lengthy calculations. Follow these simple strategies to improve your speed and accuracy during the exam.

1. Use the LCM Method: Instead of assuming the total work as 1 unit, take the LCM of the given days. This removes fractions and makes calculations much easier.

2. Learn Efficiency-Based Questions: Most IBPS PO questions are based on work efficiency.

Remember:

More efficiency = Less time
Less efficiency = More time

3. Memorise Important Formulas: Keep these formulas ready before the exam. Daily revision helps you solve questions quickly.

Work = Efficiency × Time
Efficiency = Work ÷ Time
Men × Days × Hours = Constant
Combined Efficiency = Sum of Individual Efficiencies

4. Practise Alternate Day Questions: These questions are common in IBPS PO. This approach reduces calculation mistakes.

Calculate the work completed in one complete cycle.
Find the remaining work.
Complete the last cycle separately.

5. Master Pipes & Cisterns: Treat each pipe like a worker. Find the net efficiency before calculating the final answer.

Filling pipe → Positive work
Emptying pipe → Negative work

6. Improve Calculation Speed: Fast calculations save valuable time. These skills are useful in almost every Time & Work question. Practise:

Fractions
Percentages
Ratios
LCM and HCF
Simplification

Common Mistakes to Avoid in IBPS PO Time & Work Questions

Many candidates lose easy marks because of simple mistakes. Avoiding these errors while practising Time & Work Questions for IBPS PO can improve both your speed and accuracy in the actual exam.

Daily Practice Plan for IBPS PO Time & Work Questions

A small daily practice routine can significantly improve your performance. Practising consistently helps improve calculation speed, formula retention, and overall confidence in the Quantitative Aptitude section.

Activity	Time
Revise formulas	10 minutes
Solve basic Time & Work questions	20 minutes
Practise Men-Days-Hours & Alternate Days	15 minutes
Solve Pipes & Cisterns questions	15 minutes
Analyse mistakes and revise concepts	10 minutes

Final Thoughts

Time & Work Questions for IBPS PO are among the most scoring topics in the Quantitative Aptitude section if your concepts are clear. By learning the important formulas, practising the LCM method, improving calculation speed, and solving regular quizzes, you can answer these questions accurately in less time. Make topic-wise practice, mock tests, and revision a part of your daily study plan. Consistent practice will not only improve your speed but also boost your confidence for the IBPS PO examination.

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Time & Work Questions for IBPS PO FAQs

Q1. How many Time & Work Questions are asked in the IBPS PO exam?

Ans: You can generally expect 2–4 Time & Work Questions for IBPS PO in the Preliminary examination. In the Mains exam, these concepts are often combined with Data Interpretation or Arithmetic-based caselets, making them slightly more challenging.

Q2. What is the fastest method to solve Time & Work Questions for IBPS PO?

Ans: The LCM Method is one of the quickest approaches. Instead of assuming total work as 1, take the LCM of the given number of days. This avoids fractions, simplifies calculations, and helps you solve questions much faster.

Q3. Which formulas are most important for Time & Work preparation?

Ans: The most important formulas for Time & Work include Work = Efficiency × Time, Efficiency = Work ÷ Time, Men × Days × Hours = Constant, and Combined Efficiency = Sum of Individual Efficiencies. Along with these, you should also revise the formulas for Pipes & Cisterns and Alternate Days, as these concepts are frequently used to solve exam-level questions quickly and accurately. Regular revision of these formulas will help you save time in the Quantitative Aptitude section of the IBPS PO exam.

Q4. How can I improve my speed in Time & Work Questions?

Ans: Speed improves with regular practice. Revise formulas daily, solve topic-wise quizzes, practise calculation shortcuts, and attempt sectional mock tests. After every practice session, analyse your mistakes to avoid repeating them in the exam.

Q5. Are Pipes & Cisterns and Men-Days-Hours important for IBPS PO?

Ans: Yes. These are important subtopics of Time & Work Questions for IBPS PO. Questions based on Pipes & Cisterns, Men-Days-Hours, Work Efficiency, and Alternate Days are frequently asked in the Quantitative Aptitude section and should be part of your daily preparation routine.

Mahima Jain

I am a content writer with over 8 years of experience in content writing and strategy, including 5+ years in the EdTech industry. I specialize in creating engaging, SEO-friendly content that helps students navigate competitive exams and make informed career decisions. My strength lies in simplifying complex topics into clear, user-focused content that is both informative and easy to understand.