How many minutes does a car need for 75 km at a constant 100 km/h?
Answer and explanation
Correct answer: C. 45 min
- Step 1: Time in hours = 75 ÷ 100 = 0.75 h. Step 2. In minutes: 0.75 × 60 = 45 min. Answer: 45 min. Why not the others: 0.75 min results from having given the time in hours. 80 min results from having divided the speed by the distance. 75 min results from having used 100 minutes per hour.
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