Tips For Solving Time And Work Problems In Bank Exams 

TIPS FOR SOLVING TIME AND WORK PROBLEMS IN BANK EXAMS 

 

1. Understand the Concept of Work

  • Treat total work = LCM of individual work units (usually in man-days or units).
  • If A can complete a work in 10 days, his work per day = 1/10.

 

2. Use the Unitary Method

  • Work done = Efficiency × Time
  • Time = Work / Efficiency

 

3. Use Efficiency Method (Shortcut)

  • Assume total work as 100 or LCM of given days.
  • Calculate individual efficiency:
    e.g., A does 1/5 work per day → Efficiency = 20 units if total work = 100 units.

 

4. Deal with Multiple Workers

  • If A and B work together, their combined rate = A’s rate + B’s rate.

 

5. Use the Inverse Relationship

  • More people → Less time (Inverse Proportion)
  • If 4 men do a task in 6 days, 2 men will take 12 days.

 

6. Handle Pipes and Cisterns Like Time and Work

  • Inlets = Positive work
  • Outlets = Negative work
  • Use same formulas as Time and Work.

 

7. Read Questions Carefully

  • Watch for phrases like “A leaves after x days”, “joined later”, “work alternately” etc.

 

8. Common Formulas

  • If A can do a job in X days, and B in Y days, together they do:
    + work per day.
  • If A is n times as good as B:
    Ratio of time = 1:n
    Ratio of efficiency = n:1

Quick Tip

Always convert everything to “per day” or “per hour” work first, then add/subtract as needed.

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