Question

A livestock vaccine is to be given at the rate of 2 milliliters for each 15 pounds of body weight. How much should be given to a 60-pound goat?

2 milliliters

4 milliliters

8 milliliters

12 milliliters

Answer 1

To determine how much vaccine should be given to a 60-pound goat, we start with the rate of the vaccine, which is 2 milliliters for every 15 pounds of body weight.

First, we calculate how many 15-pound units are in 60 pounds:

\[
\frac{60 \text{ pounds}}{15 \text{ pounds/unit}} = 4 \text{ units}
\]

Since each unit requires 2 milliliters of vaccine, we multiply the number of units by the amount of vaccine per unit:

\[
4 \text{ units} \times 2 \text{ milliliters/unit} = 8 \text{ milliliters}
\]

Thus, for a 60-pound goat, the amount of vaccine needed is:

\[
\text{8 milliliters}
\]

The answer is **8 milliliters**.