Quantitative Aptitude · Time, Speed & Distance
Praveen’s BMW car (length 4 m) and Varun’s Rolls-Royce (length 5 m) are moving in opposite directions at speeds of 54 km/h and 72 km/h respectively. How much time will they take to
Question
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Praveen’s BMW car (length 4 m) and Varun’s Rolls-Royce (length 5 m) are moving in opposite directions at speeds of 54 km/h and 72 km/h respectively.
How much time will they take to completely cross each other?
Options
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Explanation
Given
Length of BMW = 4 m
Length of Rolls-Royce = 5 m
Speed of BMW = 54 km/h
Speed of Rolls-Royce = 72 km/h
Opposite directions
Total distance to be covered:
Solution
Step 1: Find Relative Speed
Since they move in opposite directions:
Convert to m/s:
Step 2: Use Time Formula
✅ Answer
0.26 seconds (Option C)