# Math

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The ratio of the weight of Philipe's gerbil to the weight of Dana's gerbil is 4:7. When both gerbils are placed on a scale, the scale reads 99 ounces. how much does Dana's gerbil weigh?

• Math -

so, divide the 99 by (4+7), or that equals 9

4*9=36
7*9=?

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