# If the Celsius temperature 20 degrees C, what is the Fahrenheit temperature (F)?

Jul 10, 2017

#### Answer:

68 degrees Fahrenheit.

#### Explanation:

The ratio of degree's C to degrees F is 9/5

freezing to boiling for C is from 0 to 100 a change of 100
freezing to boiling for F is from 32 to 212 a change of 180

This is a ratio of 5:9 F to C or 9:5 C to F.

so $20 \times \frac{9}{5} = 36$ degrees F

However${0}^{o} C = {32}^{o} F$ since the two temperature scales have different starting points 32 degrees must be added .

$36 + 32 = 68$

$F = \left(C \times \frac{9}{5}\right) + 32$

$F = \left(20 \times \frac{9}{5}\right) + 32$

$F = 68$