At What Temp Will an Alcohol Thermometer in *F Read the Same Temp as a Thermometer W/a *C Scale?

Question by John: At what temp will an alcohol thermometer in *F read the same temp as a thermometer w/a *C scale?
“Alcohol thermometers can measure temperatures in the range of -100*F – 200*F. Determine the temperature at which an alcohol thermometer with a Fahrenheit scale will read the same number as a thermometer with a Celsius scale.”

I have no idea, anybody have an answer?

Best answer:

Answer by sad
As for as i know the answer is at -40 F both become equal.

Answer by Dave
40 below zero.

C = (F-32)/9*5

-40 = (-40-32)/9*5

-40 = (-72)//9*5 = -8 * 5 = -40


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