Question

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

Answer 1

Answer:

Let x be the common reading.

Then, C = F = x

Using the formula, C=5/9 (F-32),and substituting x for C and F, we get

x =5/9 (x-32)

x =5/9x - 5/9×32

x - 5/9x = 5×32/9

4/9x = - 5×32/9

x = - 5×32/4 = -40

So, -40C = -40F

Hence, at -40 degrees , the readings on the Celsius scale and the Fahrenheit scales are rhe same.

Answer 2

it is same on - 40°c.......