If 15 workers can build a road in 48 hours, then the number of workers…
2021
If 15 workers can build a road in 48 hours, then the number of workers required to do the same work in 30 hours is :
- A.
18
- B.
24
- C.
20
- D.
22
Attempted by 4 students.
Show answer & explanation
Correct answer: B
Step 1: Total work required = number of workers × time = 15 × 48 = 720 worker-hours.
Step 2: To complete the same work in 30 hours, number of workers required = Total work ÷ time = 720 ÷ 30 = 24.
Therefore, 24 workers are required to complete the work in 30 hours.
हिन्दी उत्तर:
चरण 1: आवश्यक कुल काम = मजदूरों की संख्या × समय = 15 × 48 = 720 मजदूर-घंटे।
चरण 2: 30 घंटे में उसी काम को पूरा करने के लिए आवश्यक मजदूरों की संख्या = कुल काम ÷ समय = 720 ÷ 30 = 24।
इसलिए, 30 घंटे में काम पूरा करने के लिए 24 मजदूर आवश्यक हैं।