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Three people are driving on the same route to the shop and back.
Jack drives at 10 mph to the shop & 50 mph back.
Bob drives at 20 mph to the shop & 40 mph back.
Mr. Bean drives at 30 mph to the shop & drives back at the same speed.
Suppose they start at the same time and spend the same amount of time at the shop.
Who arrives back earlier?

 Jun 16, 2020
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Interesting. Make a distance of 600 miles, and make them traverse that every time. Do the calculations yourself, and see who comes back in the shortest time! 

 Jun 16, 2020

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