Mathematics, 23.08.2019 00:30 dobrzenski8372

If a cyclist races at 30 miles per hour for 1/2 of the distance of a race, and 45 miles per hour for the final 1/2 of the distance, what is her average speed in iles per hour, for the entire race

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If a cyclist races at 30 miles per hour for 1/2 of the distance of a race, and 45 miles per hour for...