Mathematics
NULL
Medium
Question
An express train averages 100 km/h and stops for 3 minutes after every 75 km. How long does it take to cover 600 km?
A
6 hrs 21 min
✓ Official correct answer
B
6 hrs 24 min
C
6 hrs 27 min
D
6 hrs 30 min
Community credibility
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A
6 hrs 21 min
No member explanations yet for this option.
B
6 hrs 24 min
No member explanations yet for this option.
C
6 hrs 27 min
No member explanations yet for this option.
D
6 hrs 30 min
No member explanations yet for this option.
Explanation
Running time = 600/100 = 6 hours. Stops occur after each 75 km except at the destination: 600/75 − 1 = 7 stops × 3 min = 21 min. Total = 6 hrs 21 min.