SSC MTS 2022 · PYQ · Time, Speed and Distance · medium
A bus covers a distance of 45 km in 45 minutes. If its speed is decreased by 20 km/hr, then what will be the time taken by it to cover the same distance?
A.72.5 minutes
B.67.5 minutes✓ Correct
C.62.5 minutes
D.78.5 minutes
Explanation
Original speed = 45km / (45/60)hr = 60 km/h. New speed = 60–20 = 40 km/h. Time = 45/40 = 1.125 hours = 67.5 minutes.
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