Car

Probability Level 4

Eight people are planning to share the cost of a rental car. If one person withdraws from the arrangement and the others share equally the entire rental car, then by what factor will each person's expense increase?


The answer is 0.1428.

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1 solution

Sujoy Roy
Dec 8, 2014

Share increase = 1 7 − 1 8 1 8 = 1 7 = 0.143 =\frac{\frac{1}{7}-\frac{1}{8}}{\frac{1}{8}}=\frac{1}{7}=\boxed{0.143}

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