Question

At what temperature will both Celsius and Fahrenheit scales read the same value?

• A. $100^{\circ }$
• B. $180^{\circ }$
• C. $40^{\circ }$
• D. $-40^{\circ }$

Answer 1

Answer: (D)

$\frac{F-32}{180}=\frac{C}{100}$
$t-32=\frac{9t}{5}$
$t=-40^{\circ }$