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Bond Osborne
01/07/2023 · Middle School

A motorist, travelling at a usual average speed, will cover a certain distance in \( 1 \frac{1}{2} \mathrm{~h} \). For the same distance, he would have saved 15 minules if he had increased his usual speed by \( 20 \mathrm{~km} / \mathrm{h} \). Find his usual average speed in \( \mathrm{km} / \mathrm{h} \)

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The usual average speed of the motorist is 100 km/h.

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