WBCS.LIVE practice question

If 5 workers can build a wall in 12 days, how many workers are needed to build the same wall in 10 days?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 4
  2. 6
  3. 8
  4. 10

Correct answer and explanation

Correct answer: 6

Explanation: ✅ Correct Answer: (B) 6 📚 Explanation: Step-1: Use the concept that Work = Workers x Days. Here, 5 workers x 12 days = 60 worker-days of work required. Step-2: To find the number of workers (W) for 10 days, the total work remains the same: W x 10 days = 60 worker-days. Step-3: W = 60 ÷ 10 = 6 workers.