"Joy" wrote in message
...

... On my first trip to England, an Englishman taught me an easy way to
convert Celsius to Fahrenheit in my head. Double the Celsius figure,
subtract 10% and add 32. In other words, take 44 C, double it (88),
subtract 10% (88 - 9 = 79, add 32 (79 + 32 = 111.


If you want to be more precise, the algebraic formulae for conversions are

C = (5/9)*(F-32)

and

F = (9*C/5)+32

--
MatSav