Two cyclists start from the same place in opposite directions. One goes towards North at 18 km/h and the other goes South at 22 km/h. What is the distance between them after 30 minutes? MCQ with Answer and Explanation
Two cyclists start from the same place in opposite directions. One goes towards North at 18 km/h and the other goes South at 22 km/h. What is the distance between them after 30 minutes?
A. 30 km
B. 25 km
C. 15 km
D. 20 km
Answer: Option D
Solution (By JKSSB Mock Tests)
Relative speed in opposite directions = 18 + 22 = 40 km/h. Time = 30 minutes = 0.5 hours. Distance = 40 * 0.5 = 20 km.
A person runs at 8 km/h instead of 6 km/h and consequently covers 10 km more in the same timeframe. Find the baseline distance covered at his normal speed.
Explanation:
Let duration be t hours. Distance difference = 8t - 6t = 2t = 10 km => t = 5 hours. Distance handled at normal speed (6 km/h) = 6 * 5 = 30 km.
No comments yet. Be the first to start the discussion!