Chapter 2 Rational Numbers

Oasis

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Twenty caravans are travelling across the desert one day apart. The first caravan reached an oasis, and the camels drank half of the water in the pool. On the second day, the second caravan reached the oasis, and the camels drank one-third of the water that was left. On the third day, the camels in the third caravan drank one-quarter of the water that was left. On the first day, the pool contained 1050 m³ of water. How much was left after the 20^th caravan passed through?

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Note: Brain teasers are often open to more than one interpretation, and multiple answers may be possible. Sample solutions are shown.