Time & Work · Question 2 · Easy

If 15 workers can build a wall in 8 days, how many days will 20 workers take to build the same wall?

  1. 5 days
  2. 6 days
  3. 7 days
  4. 10 days
Answer and explanation

Answer: B. 6 days

Explanation: Total work = 15 × 8 = 120 worker-days. With 20 workers: 120 ÷ 20 = 6 days.

Previous: Ravi can finish a report in 12 days and Suresh can finish it in 24 days… · Next: Meena can paint a room in 10 hours. What fraction of the room does she paint…

Practise time & work

Try a fresh set of time & work questions with an explanation after every answer, free and without signing up: Time & Work practice. Or sit a full placement mock test.

More time & work questions

More quantitative aptitude practice

Pipes & Cisterns · Time, Speed & Distance · Problems on Trains · Boats & Streams · Permutation & Combination · Probability · Data Interpretation · Mensuration

LogicWiz Exams home · All practice topics · Placement mock tests · Daily 10 challenge