AlgebraEasy–MediumMinutes to cover a distance at a constant speed
Algebra practice question
A train leaves a station at 9:15 a.m. and travels at a constant 80 kilometres per hour. How many minutes after 9:15 a.m. has the train travelled 200 kilometres?
Answer: 150
200 ÷ 80 = 2.5 hours = 150 minutes.
Common wrong answers
- If you answered 24
- 24 comes from 80 ÷ 200 × 60.
- If you answered 160
- 160 comes from 2 hours 40 minutes, misreading 2.5 hours.
- If you answered 2.5
- 2.5 is the time in hours, not minutes.
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