Brain Game: The Problem of the Two Cars

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Today's Brain Game Think Thursday is a classic puzzle included in Robert Tocquet's 1957 book The Magic of Numbers (2+2=4). Enjoy!

Two cars are making a return journey between two towns 200 miles apart. The first car does the journey there at a speed of 50 miles per hour, and the return journey at a speed of 40 miles per hour. The second car makes the journeys both ways at an average speed of 45 miles per hour.

Which of the two cars takes the
less time to cover the whole distance?

Here is the SOLUTION.

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September 27, 2012 - 3:30am
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