Question
A vehicle travels at 36 km/h and is scheduled to reach its
destination in 100 minutes. After traveling half the distance, it stops for 10 minutes. What should be the speed for the remaining journey to reach on time?Solution
Total distance = 36 × (100/60) = 60 km
Time for half journey = (30 ÷ 36) × 60 = 50 minutes
Time remaining = 100 – 50 – 10 = 40 minutes
Required speed = (30 ÷ 40) × 60 = 45 km/h
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