Question

what number can you multiply each length on the map by to find the actual distance?
1/2
what is the actual distance from oscars campsite to the beach?
blank mi
4 in. : 2 mi

Explanation:

Step1: Find the scale - factor

Given the scale $4$ in. $:2$ mi. To find the factor to multiply map - length by to get actual distance, first simplify the scale ratio. Convert it to a unit - rate. The ratio of inches to miles is $\frac{4}{2}=\frac{2}{1}$, which means 1 inch on the map represents $\frac{1}{2}$ mile in actual distance. So the number to multiply each length on the map by to find the actual distance is $\frac{1}{2}$ mile per inch.

Step2: Find the actual distance from campsite to beach

The distance from the campsite to the beach on the map is $2\frac{1}{2}=\frac{5}{2}$ inches. Multiply the map - distance by the scale - factor. The actual distance $d$ is $d=\frac{5}{2}\times\frac{1}{2}=\frac{5}{4} = 1.25$ miles.

Answer:

1.25