Selected MCQ

Current Question
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 1
A person covers a distance at 40 km/h and returns at 60 km/h. Average speed is ____.
  • A. 48 km/h
  • B. 50 km/h
  • C. 45 km/h
  • D. 52 km/h
Correct Answer: A
Explanation:
Average = 2ab/(a+b) = 48 km/h.
Related Question 2
If a person travels half distance at 40 km/h and half at 60 km/h, average speed is ____.
  • A. 48 km/h
  • B. 50 km/h
  • C. 52 km/h
  • D. 55 km/h
Correct Answer: A
Explanation:
Harmonic mean = 48 km/h.
Related Question 3
If a train travels 120 km in 2 hours, its speed is ____.
  • A. 50 km/h
  • B. 60 km/h
  • C. 70 km/h
  • D. 80 km/h
Correct Answer: B
Explanation:
Speed = 120/2 = 60 km/h.
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
If a person walks 4 km/h for 2 hours, how much distance does he cover?
  • A. 6 km
  • B. 8 km
  • C. 10 km
  • D. 12 km
Correct Answer: B
Explanation:
Distance = 4×2 = 8 km.