Answer
$9\frac{3}{4}$ minutes
Work Step by Step
$2\frac{2}{3} + 4\frac{7}{15} + 2\frac{37}{60} = 2\frac{40}{60} + 4\frac{28}{60} + 2\frac{37}{60} = 8\frac{105}{60} = 9\frac{45}{60} = 9\frac{3}{4}$
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