Question

Find the eqivalent temperature of ${20}^{\circ }C$ in degree Fahrenheit.

• A. $-{68}^{\circ }F$
• B. ${68}^{\circ }F$
• C. $-{20}^{\circ }F$
• D. ${20}^{\circ }F$

Answer 1

The correct option is B ${68}^{\circ }F$

Let $C$ be the temperature in degree Celsius and $F$ be the temperature in degree Fahrenheit.
Given, $C={20}^{\circ }C$
Then, $\frac{F-32}{9}=\frac{C}{5}$
$\Rightarrow \frac{F-32}{9}=\frac{20}{5}$
$\Rightarrow F-32=36$
$\Rightarrow F=36+32={68}^{\circ }F$