Answer:
Both scales will read temperature at -40 degree C or - 40 degree F
Explanation:
As we know that two temperature scales are defined as
[tex]\frac{T_c - 0}{100 - 0} = \frac{T_f - 32}{212 - 32}[/tex]
here we know that two temperature scales will read same values
so we will have
[tex]T_f = T_c = x[/tex]
here we have
[tex]\frac{x}{100} = \frac{x - 32}{180}[/tex]
[tex]1.8 x = x - 32[/tex]
[tex]x = -40 ^o C[/tex]
