Selected MCQ

Current Question
A train covers 10 km in 12 minutes. Time for increased speed is ____.
  • A. 10 min
  • B. 11 min 20 sec
  • C. 13 min
  • D. 13 min 20 sec
Correct Answer: D
Explanation:
Adjusted speed affects time.
Related Question 1
The time taken upstream is twice that downstream. Find the speed relation.
  • A. 12 km/h
  • B. 13 km/h
  • C. 14 km/h
  • D. 15 km/h
Correct Answer: C
Explanation:
Solve using the speed ratio method.
Related Question 2
Ratio of speed of boat to stream is 36:5. Time downstream is 5h 10min. Find upstream time.
  • A. 5h 50m
  • B. 6h
  • C. 6h 50m
  • D. 12h 10m
Correct Answer: C
Explanation:
Use the ratio method for speeds.
Related Question 3
The speed of a man rowing in still water is 15 km/h. If he rows downstream and upstream, find the time relation.
  • A. 10 sec
  • B. 15 sec
  • C. 20 sec
  • D. 12 sec
Correct Answer: D
Explanation:
Based on the speed relation between the stream and still water.
Related Question 4
If a person covers 150 km in 3 hours, his speed is ____.
  • A. 40 km/h
  • B. 45 km/h
  • C. 50 km/h
  • D. 55 km/h
Correct Answer: C
Explanation:
Speed = 150/3 = 50 km/h.
Related Question 5
If a train runs at 54 km/h, how many meters per second is its speed?
  • A. 10
  • B. 12
  • C. 15
  • D. 18
Correct Answer: C
Explanation:
54 × 5/18 = 15 m/s.