Question

The temperature in degree Fahrenheit (°F) ranges between 86 and 95 on a certain island. Celsius temperature (°C) is related to Fahrenheit temperature by the formula `C = 5/9 (F-32)`. What is the Celsius temperature range of this island?

Answer 1

Use `C = (5/9)(F − 32)`

For F = 86: C = `(5/9)(86 − 32)`

= `(5/9)(54)`

= 30°C

For F = 95: C = `(5/9)(95 − 32)`

= `(5/9)(63)`

= 35°C

So the Celsius range is 30°C to 35°C.