At what temperature in degrees are Centigrade and Fahrenheit equal?
To convert Fahrenheit to Centigrade you have multiply the temperature in Celsius by 9/5 and then add 32. So, to find the point where both scales are equal we can use two simple equations:
- °C = (°C * 9/5) + 32
- °C - (°C * 9/5) = 32
- -4/5 * °C = 32
- °C = -32 * 5/4
- °C = -40
- °F = (°F * 9/5) + 32
°F - (°F * 9/5) = 32
-4/5 * °F = 32
°F = -32 * 5/4
°F = -40
So, Centigrade and Fahrenheit are equal at -40 degrees.
What are your thoughts on this subject?
72 Comments
twohowlingdogs
I learned from Bob & Doug McKenzie that when you get the temp in Celsius, simply double it and add 30. You'll always come within a couple degrees of the correct answer in Fahrenheit. So unless you can feel the difference between 77 and 80 degrees, this works just fine when someone says it's 25 degrees Celsius.
Robert Feeney
your wording is wrong you said this "To convert Fahrenheit to Centigrade you have multiply the temperature in Celsius by 9/5 and then add 32." You should have said this ."To convert Fahrenheit to Centigrade. You take the temperature of Fahrenheit minus 32 times 5/9 equals Centigrade. Both forumals you wrote is for converting Centrigrade to Fahrenheit. I hope you are not a math teacher. Because if you are . I would pull my child out of your class.
Jeff Lupetin
KOO ROO KOO KOO KOO KOO KOO KOOOO, KOO ROO KOO KOO KOO KOO KOO KOOOOOO ......EH.
earlepg
robert karel, Evidently, everyone can't figure it out. Only 44% got it right even though Alan Waites' method (one comment above, in this instance it could have been very quick and easy). That what I did.
Wayne Roberts
Fahrenheit needs to be consigned to history.
Just not as logical as Celsius or Kelvin.
Player
Learned this watching Ice Road Truckers, who knew that could be educational.
Bob Bracegirdle
Taught it in junior school 65 years ago
Lynne Zeman
Huh? Answer is very confusing and I am not easily confused.
Andrew Thompson
Elaine Tassoni, You are absolutely lovely!
popeyenys
I learned something though most of the explanation went over my head.
Jerry Edwards
Tasha the Cavalier, easiest is to refer to twohowlingdogs explanation. Estimation is sometimes just as good.
Jerry Edwards
Peter Robertson, totally agree. Don't criticise someone else's efforts.
Bottom line, ladies and gentlemen, this is a quiz, not a lesson in correction.
If you're not careful, you will kill the interest in what started out as a very good site.
Jerry Edwards
edusido, sorry... Pressed dislike first. I meant to press like. Corrected it
Jerry Edwards
Robert Feeney, personally I hope you're not a spelling teacher. What is a forumal?
IF YOU'RE GOING TO CRITICISE, MAKE SURE YOU'RE CORRECT YOURSELF.
Otherwise, BACK OFF.
Alan Waites
Pretty easy considering it had to be minus and only 1 minus option, answer option needs to be thought out.
robert karel
You all can figure it out, I got it right and moving on to the next quiz!
James Colvin
As a graduate chemist I knew that.
Peter Robertson
I like? how many spend their time by explaining (a) How the question is wrong or (b) how the answer is wrong.What does this mean? I like those who expand the answer somewhat but (a) or (b) ?Nope,just move on to the next question