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--- day_of_week [2020.12.29 06:25] – Steve Isenberg
+++ day_of_week [2020.12.29 06:38] – [Convert Fahrenheit to Centigrade and Back In Your Head] Steve Isenberg
@@ Line 48: / Line 48: @@
 Nov 7 is Thursday, so 11th is Monday.
-=====Convert Fahrenheit to Centigrade and Back In Your Head=====
-As a shortcut, F=degrees Fahrenheit and C=degrees Centigrade (or Celsius).\\
-The basic conversion is exact:\\ Degrees F = (Degrees C * 9/5) + 32 and\\ Degrees C = (Degrees F - 32) * 5/9
-===F to C===
-  - Subtract 32 from F
-  - Halve the result
-  - Add back 10% of the result
-  - Done, you have C.
-Example\\
-Start: F = 57\\
-Minus 32: F-32 = 25\\
-Halve it: 25/2 = 12.5\\
-Add back 1/10: 12.5 + 1.3 = 13.8 or 14C
-===C to F===
-  - Double C
-  - Double the result
-  - Subtract 1/10 of the result
-  - Add 32
-  - Done, you have F.
-Example\\
-Start: C=32\\
-Double it: C*2 = 64\\
-Subtract 1/10: 64-6 = 58\\
-Add 32: 58+32 = 90F|
-====try====
-|===F to C===\\
-  - Subtract 32 from F\\
-  - Halve the result\\
-  - Add back 10% of the result\\
-  - Done, you have C.\\
-\\
-Example\\
-Start: F = 57\\
-Minus 32: F-32 = 25\\
-Halve it: 25/2 = 12.5\\
-Add back 1/10: 12.5 + 1.3 = 13.8 or 14C|\\
-\\
-===C to F===\\
-  - Double C\\
-  - Double the result\\
-  - Subtract 1/10 of the result\\
-  - Add 32\\
-  - Done, you have F.\\
-\\
-Example\\
-Start: C=32\\
-Double it: C*2 = 64\\
-Subtract 1/10: 64-6 = 58\\
-Add 32: 58+32 = 90F|
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