Ravi rides 40 minutes at 45 km/h to reach his workplace. At what speed must he ride to reach in 30 minutes?
Correct answer D. 60 km/h
Explanation
Distance = 45 × 40/60 = 30 km. To cover 30 km in 1/2 hour, speed = 30 / 0.5 = 60 km/h.
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