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There is a Ferris wheel with ten cars which each sit two people. It moves at a speed that a car passes the platform every minute. The Ferris wheel opened at 10 AM for exactly thirty minutes before going on a break. How many people got to enjoy a ride?

Fact Lab

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Interesting fact:

The first steel Ferris wheel was built for the World Exhibition in Chicago in 1893. The organizers were looking for a big attraction to outshine the Eiffel tower. The Ferris wheel was the biggest and most daring of the time, however the idea of a circular fun ride was not new. Before George W. G. Ferris came along, many carnivals had small handturned wooden wheels.

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