RE: [MATHEDCC] Have you heard this one? Another good proble

Wayne Mackey (wmackey@COMP.UARK.EDU)
Tue, 8 Apr 1997 09:04:48 -0600

>That's what I get too.
>
>----------
>From: AtlntaMath@AOL.COM[SMTP:AtlntaMath@AOL.COM]
>Sent: Monday, April 07, 1997 15:54
>To: mathedcc@archives.math.utk.edu
>Subject: Re: [MATHEDCC] Have you heard this one? Another good proble
>
>OK, making a stab at this one.
>Since 500 lbs. is 99% water, that leaves 1% of 500 = 5lbs as "solids". Now,
>the 99% reduces to 98%, so .99/.98=495/x, which implies the "liquid" reduces
>to 490 lbs from 495 pounds. Adding back the "solids," I get a new mass of
>495 pounds. Anyone willing to verify?
>-Chris Harrow

Think of it this way. After evaporation the original 5 pounds of solid
material is 2 percent of the entire weight of the potato salad. So the
question becomes 5 is 2% of what weight. Comparing ratios of percentages is
always risky.

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