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A thoroughbred can run $\"\"$ mile in about $\"\"$ minute.

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$\"\"$ (Convert minutes to hours and divide by common units) $\"\"$ (Cancel common terms)

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$\"\"$ (Reciprocal of $\"\"$ is $\"\"$ )

$\"\"$ (Multiply numirator: $\"\"$ )

$\"\"$ (Multiply denominator: $\"\"$ )

$\"\"$ (Divide: $\"\"$ ) $\"\"$

The solution is $\"\"$ miles per hour.