A project takes 4 workers 6 hours to complete. How long would it take 3 workers to complete the same project?
Answer
8 hours
How to solve it
1
Total work: 4 workers × 6 hours = 24 worker-hours
2
Workers available: 3
3
Time needed: 24 ÷ 3 = 8 hours
Hints
Calculate total work needed
How many workers are available?
Divide total work by number of workers