Question

What is the scale of a map if 50 km in real distance is 2 dm on a map?

Answer 1

Answer:

1 dm on map equals 25 km in real distance.

Step-by-step explanation:    

We have been given that 50 km in real distance is 2 dm on a map. We are asked to find the scale of the map.

To answer our given problem we will use unit rate. When rates are expressed as a quantity of 1, they are called unit rates. Such as 3 feet per second or 10 miles per hour.

To find the unit rate we will divide 50 km by 2 dm.

$\text{Unit rate}=\frac{50\text{ km}}{2\text{ dm}}$

$\text{Unit rate}=25\frac{\text{ km}}{\text{ dm}}$

Therefore, 1 dm on map equals 25 km in real distance or we can say scale of map is 25 km per dm.