Answer
$1\frac{161}{600}$
Work Step by Step
$\frac{9}{10} = \frac{540}{600}$
$\frac{7}{200} = \frac{21}{600}$
$\frac{1}{3} = \frac{200}{600}$
$\frac{540}{600} + \frac{21}{600} + \frac{200}{600} = \frac{761}{600} = 1\frac{161}{600}$
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