Q1 · medium · AI-verified
If 6 workers can lay 180 meters of railway track in 5 days, how many workers are needed to lay 420 meters of track in 7 days?
- 10 workers
- 12 workers
- 14 workers
- 16 workers
Q2 · medium · AI-verified
15 men can build a railway platform in 20 days. How many men are required to build the same platform in 12 days?
- 25 men
- 30 men
- 18 men
- 20 men
Q3 · medium · AI-verified
A pipe can fill a water tank in 4 hours while another pipe can empty the same tank in 6 hours. If both pipes are opened together, in how many hours will the tank be filled?
- 15 hours
- 12 hours
- 10 hours
- 8 hours
Q4 · medium · AI-verified
20 machines can produce 400 railway sleepers in 8 hours. How many sleepers can 15 machines produce in 12 hours?
- 450 sleepers
- 500 sleepers
- 400 sleepers
- 600 sleepers
Q5 · medium · AI-verified
8 men working 6 hours a day can complete a railway construction work in 10 days. In how many days can 12 men working 8 hours a day complete the same work?
- 5 days
- 6 days
- 7 days
- 4 days