AlgebraHardMinutes until two travellers meet
Algebra practice question
A cyclist and a walker start 8 kilometres apart and travel toward each other along the same road, the cyclist at 15 kilometres per hour and the walker at 5 kilometres per hour. After how many minutes do they meet?
Answer: 24
They close the gap at 20 km/h, so 8/20 hour = 0.4 hour = 24 minutes.
Common wrong answers
- If you answered 32
- 32 uses the cyclist's speed alone.
- If you answered 96
- 96 uses the walker's speed alone.
- If you answered 0.4
- 0.4 is the time in hours, not minutes.
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