Selected MCQ

Current Question
In a journey of 24 miles, two-thirds of the distance is covered at 40 mph. Total time taken is ____.
  • A. 14.4 min
  • B. 20 min
  • C. 28.8 min
  • D. 32 min
Correct Answer: D
Explanation:
Total time computed by segment speeds gives 32 minutes.
Related Question 1
If P takes twice time of Q and thrice of R, total time taken is ____.
  • A. 7
  • B. 8
  • C. 9
  • D. 6
Correct Answer: D
Explanation:
Relative ratios simplify to 6.
Related Question 2
C completes half the work in 6 days, D completes 1/3 in 5 days. Total time taken?
  • A. 10 days
  • B. 12 days
  • C. 8 days
  • D. 9 days
Correct Answer: A
Explanation:
Combined rates calculation.
Related Question 3
Two boys walk at 5 km/h and 5.5 km/h. Time difference after same distance is ____.
  • A. 17 hr
  • B. 14 hr
  • C. 12 hr
  • D. 19 hr
Correct Answer: A
Explanation:
Relative speed difference.
Related Question 4
21 poles equally spaced. Time taken by car is ____.
  • A. 39 sec
  • B. 40 sec
  • C. 39.38 sec
  • D. 39.5 sec
Correct Answer: B
Explanation:
Number of intervals = poles−1.
Related Question 5
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.