1. If A can complete a job in 8 days and B can complete the same job in 12 days, how long will it take for both A and B working together to complete the job?
a. 3 days
b. 4 days
c. 5 days
d. 6 days
Answer: b. 4 days
2. If 5 workers can complete a task in 20 days, how many workers are needed to complete the same task in 10 days?
a. 2 workers
b. 3 workers
c. 4 workers
d. 5 workers
Answer: c. 4 workers
3. If a machine can produce 120 units in 5 hours, how many units can it produce in 8 hours?
a. 192 units
b. 200 units
c. 240 units
d. 250 units
Answer: a. 192 units
4. A train travels 300 km in 4 hours. What is its speed in km/h?
a. 60 km/h
b. 75 km/h
c. 80 km/h
d. 100 km/h
Answer: b. 75 km/h
5. If a car travels at a speed of 60 km/h, how long will it take to cover a distance of 240 km?
a. 2 hours
b. 3 hours
c. 4 hours
d. 5 hours
Answer: c. 4 hours
6. A person covers a distance of 50 km at a speed of 25 km/h. What is the time taken to cover the distance?
a. 1 hour
b. 2 hours
c. 3 hours
d. 4 hours
Answer: c. 2 hours
7. If A can complete a job in 10 days and B can complete the same job in 15 days, how long will it take for A, B, and C working together to complete the job, where C is twice as efficient as B?
a. 2 days
b. 4 days
c. 5 days
d. 6 days
Answer: b. 4 days
8. If 8 workers can build a wall in 6 days, how many days will it take for 12 workers to build a similar wall?
a. 2 days
b. 3 days
c. 4 days
d. 5 days
Answer: b. 3 days
9. If it takes 6 hours for 5 machines to produce 300 units, how long will it take for 8 machines to produce the same number of units?
a. 2 hours
b. 3 hours
c. 4 hours
d. 5 hours
Answer: c. 4 hours
10. A cyclist covers a distance of 120 km at a speed of 30 km/h. How long will it take to cover the distance?
a. 2 hours
b. 3 hours
c. 4 hours
d. 5 hours
Answer: c. 4 hours
11. A car travels at a speed of 45 km/h for the first half of the journey and 60 km/h for the second half. What is the average speed for the entire journey?
a. 50 km/h
b. 52.5 km/h
c. 55 km/h
d. 57.5 km/h
Answer: b. 52.5 km/h
12. If a train covers a distance of 240 km in 3 hours, what is its speed in meters per second? (1 km = 1000 m)
a. 80 m/s
b. 100 m/s
c. 120 m/s
d. 160 m/s
Answer: b. 100 m/s