Question

A zoo has a black rhinoceros that weighs 18 times as much as an average-size chimpanzee. The rhinoceros weighs 2,250 pounds.

Answer 1

Answer: 125 pounds

Step-by-step explanation:

Let's first represent the weight of the black rhinoceros and chimpanzee with variables. We will assign r for the rhinoceros and c for the chimpanzee.

In the question, we were given that the weight for a black rhinoceros is 18 times as much as an average-size chimpanzee. This makes 18 times the chimpanzee's weight equal to the rhinoceros' weight.

Let's put this into an equation.

$r=18*c$

Now, let's put in the values we know to find the weight of the chimpanzee (i.e., c). We know the weight of a rhinoceros (represented by r) is 2250 pounds, so we can replace it for r in the equation.

$2250=18*c$

To solve this equation, we can divide both sides by 18 to get c by itself and know what it's value is.

$\frac{2250}{18}=\frac{18*c}{18}$

We can remove the $\frac{18}{18}$ from the right side to be left with c. We can also divide 2250 by 8 to get the weight of an average-size chimpanzee.

$c=\frac{2250}{18}\\ c=125$

Hence, an average-size chimpanzee weighs 125 pounds.