Bill and Amy want to ride their bikes from their neighborhood to school which is 14.4 kilometers away. it takes Amy 40 minutes to arrive at school. bill arrives 20 minutes after Amy. how much faster (in meters/secound) is Amys average speed for the entire trip?
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Answer:
Amy: Km/minute = 14.4/40 = 0.36 km/minute = 360 m/60 seconds = 6 m/sec
Bill: km/minute = 14.4/60 = 0.24 km/minute = 240 m/60 seconds = 4 m/sec
Amy goes 2 m/sec faster than Bill
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