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12% of the mammals at the aquarium are otters. 40% of the otters are male. What percent of the mammals at the aquarium are female otters? 

 Jan 27, 2019
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40% of 12% is 4/10 * 3/25 = 12/250 --> 4.8/100, or 4.8%. 12% - 4.8% = 7.2%, so \(\boxed{7.2 \%}\) of the mammals at the aquarium are female otters.

 

Hope this helps, 

- PM

 Jan 27, 2019

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