Question

Which of the following temperature will read the same value on Celsius and Fahrenheit scales.
A) -40°
B)40°
C)-80°
D)-20°​

Answer 1

option a is the answer minus 40

Answer 2

Answer: - 40

Explanation:

°F = 9/5 [° C ] + 32

Let the temperature be x

So x = 9/5 x +32

x - 9/5 x = 32

- 4/5 x = 32

x = 32×-5/4 = -40