Practical Mathematics for Grade 10, Problem ID: 4426

Practical Mathematics K10Americans measure the temperature in oF.
Europeans measure the temperature in oC.
The formula to convert Fahrenheit to Celsius is:
c = 5 (f - 32) / 9
where / is the symbol for division,
f represents the temperature in oF and
c represents the temperature in oC.

What is the temperature at which the Celsius and Fahrenheit readings are the same?


60o80o -40o -20o