How many minutes does a 45 km journey take at a steady 90 km/h?

Answer and explanation

Correct answer: D. 30 minutes

  1. Step 1: Time = distance / speed = 45 / 90 hours. Step 2. 45 / 90 x 60 = 30 minutes. Answer: 30 minutes. Why not the others: 50 minutes: 50 reads the decimal hours as minutes. 40 minutes: 40 adds ten minutes that the question does not mention. 120 minutes: 120 turns the fraction upside down.

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