Time & Work Crash Course

Learn the core concepts first, practise step by step, and then test your skills with 25 exam-style MCQs.

English Only8 Foundation Questions25 Main MCQs

📘 Crash Course

1. One-day workIf A takes x days → one-day work = 1/xIf a person completes a job in x days, the work done in one day is 1/x.

2. Combined workA + B rate = 1/A-days + 1/B-daysAdd the individual one-day work rates.

3. Time from rateTime = Total work ÷ rateDivide total work by the one-day work rate.

4. Remaining workRemaining = 1 − completed fractionSubtract the completed fraction from 1.

5. EfficiencyEfficiency ↑ → time ↓Efficiency and time are inversely proportional.

6. Percentage efficiency25% more efficient → rate × 1.25A 25% increase in efficiency multiplies the work rate by 1.25.

Exam tip: Calculate work rates carefully, use a common denominator for fractions, and verify that the final answer matches an option.

8 questions arranged from very easy to challenging. Answers and explanations can be opened or hidden at any time.

Choose one answer for each question. Submit to mark answers green or red and calculate your score.

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