<VV> Correction Re: To Ping or Not to Ping ? - Octane - then & now
J R Read
hmlinc at sbcglobal.net
Mon Sep 20 12:44:14 EDT 2010
Yes... Guess I forgot my HS algebra.
Your expression is correctly stated.
Later, JR
----- Original Message -----
From: FrankCB at aol.com
To: hmlinc at sbcglobal.net
Cc: virtualvairs at corvair.org
Sent: Monday, September 20, 2010 11:29 AM
Subject: Correction Re: <VV> To Ping or Not to Ping ? - Octane - then & now
JR,
But it's NOT the value of M plus half the value of R. Rather it's equal to half of the SUM of M and R which is written as (M+R)/2. Consider it as the AVERAGE of M and R. There are 2 ways of measuring the octane of gasoline. One is the Motor method and the other is the Research method. The octane number posted on the gas pump is simply the average of the 2 numbers.
Frank Burkhard
In a message dated 9/20/2010 12:12:27 A.M. Eastern Daylight Time, hmlinc at sbcglobal.net writes:
Bryan just told you. M + R / 2
Later, JR
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