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24 September, 06:13

Your grandma lives 300 miles away. To go to her house, your average is 60 miles per hour (60mph). On the way home, you travel a bit slower at 50 miles per hour (50mph). What was your average speed for the entire round trip?

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  1. 24 September, 06:31
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    55mph, (60 + 50) divided by 2 = 55.
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