Selected MCQ

Current Question
Average speed of bus including stoppages is 45 km/h, and excluding is 54 km/h. Find stoppage time ratio.
  • A. 9
  • B. 10
  • C. 12
  • D. 20
Correct Answer: B
Explanation:
Speed ratio gives stoppage.
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
A man rows 3 km upstream in 3 hours and 15 km downstream in the same time. Find stream speed.
  • A. 2 km/hr
  • B. 4 km/hr
  • C. 6 km/hr
  • D. 9 km/hr
Correct Answer: A
Explanation:
Using upstream/downstream equations gives 2 km/hr.
Related Question 5
A train travels 100 km/h with stoppages. What is the actual time?
  • A. 6 hr 21 min
  • B. 6 hr 24 min
  • C. 6 hr 27 min
  • D. 6 hr 30 min
Correct Answer: A
Explanation:
Adjusted average speed.