A thermometer is used to measure temperature.
Temperature can be measured in degrees Fahrenheit (°F) or degrees Celsius (°C).
The red line on the thermometer ends halfway between the third and fourth marks after 30°F.
Each mark on the thermometer represents 2°F.
So, the temperature shown on the thermometer is 37°F.
First, find the temperature shown on each thermometer.
The thermometer on the left shows the temperature 41°F.
The thermometer on the right shows the temperature 50°F.
Now, find the difference between the two temperatures.