A. There is a total population of 128 mice living under a house. The mice have either gray fur or black fur.
If 47 of the mice have gray fur, what percentage of the mice have black fur?

Explanation: Evaluate the question carefully. We have a population of 128 mice, and 47 of them have gray fur, and the rest have black fur. That means that the other mice, besides the 47, have black fur.

[tex]128 - 47 = 81[/tex]

To calculate percentages, I come up with proportions. 81 black fur mice over the total mice is equal to x over 100.

[tex]\frac{81}{128} = \frac{x}{100}[/tex]

To solve the proportion, cross multiply and then divide.

[tex]81 * 100 / 128 = 63.28125[/tex]

Round your answer to the nearest tenth.

[tex]63.3[/tex]%

A. There is a total population of 128 mice living under a house. The mice have either gray fur or black fur. If 47 of the mice have gray fur, what percentage of the mice have black fur?

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A. There is a total population of 128 mice living under a house. The mice have either gray fur or black fur.
If 47 of the mice have gray fur, what percentage of the mice have black fur?