1. A video cassette recorder uses 2m of tape in 3 minutes when set on extended play. The tape is about 240 m long. How many hours can be recorded at this setting?
2. You would burn about 200 calories by walking for 60 minutes. About how many calories would you burn if you walk or 15 minutes?
3. A 17 minute phone call from Boston to Chicago costs $2.38. What is the cost per minute?
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