Question

Which of the following temperature will read the same value on Celsius and Fahrenheit scales

Answer 1

Answer:

The answer is -40°

Explanation:

The equation used for converting Fahrenheit and Celcius temperature are:

°F = (°C * 9/5) + 32

°C = (°F - 32) * 5/9

There is an old algebraic trick which is used to find when the temperature on both scales is equal.

Just set the equation by putting °F = °C in one of the equations  

1-

°C = (°C * 9/5) + 32

°C - (°C * 9/5) = 32

-4/5 * °C = 32

°C = -32 * 5/4

°C = -40

2-

°F = (°F * 9/5) + 32

°F - (°F * 9/5) = 32

-4/5 * °F = 32

°F = -32 * 5/4

°F = -40

Answer 2

Answer:

Explanation:

There is one point on the Fahrenheit and Celsius scales where the temperatures in degrees are equal. This is -40 °C and -40 °F