Question
A bus takes 90 minutes to cover 135 km. If its speed is
reduced by 15 km/h, find the new time required to cover the same distance.Solution
ATQ, Speed of the bus = (135/90) × 60 = 90 km/h New speed of the bus = 90 – 15 = 75 km/h So, required time = (135/75) × 60 = 108 minutes or 1 hour and 48 minutes
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