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4035. The number of trucks driving past a gas station i 2019

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Description

4035. The number of trucks driving past a gas station is one of 3: 2 cars. It is known that, on average, one of 30 trucks and one of 25 cars will stop for refueling. Find the probability that a passing car will refuel.

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Additional information

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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