Here are the answers and walkthrough to Stupid Test Level 17 Question 6 – Bill climbs a two-mile hill aL an uphill speed of two miles per hour, spends no time aL the top, and immediately walks down aL six miles per hour. What is his average speed for the up and down trips?
- One hour up, 20 minutes down = 80 minutes for four miles. so 3 miles per hour.
- 3 miles per hour
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