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forum.virtualchallengemeets.com • View topic - Problem

Problem

I can do anything, as long as I have my handy-dandy Calculator.

Problem

Postby ENHSmath » Wed Apr 17, 2013 4:37 pm

Donny starts typing a manuscript using "hunt and peck" typing at 29 words per min (wpm) after 2 hours and 10 minutes, Donna, who types 95 wpm, joins him. Together they finish in 2hrs and 45 minutes. What percent of the manuscript did Donna type?

Answer: 64.7 %
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Re: Problem

Postby sxk1693 » Wed Apr 17, 2013 8:23 pm

This is a rates problem.
First find[unparseable or potentially dangerous latex formula] (time Donny) which is the time Donny types alone. This is: [unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula] (time from when Donna joins to the end) this is [unparseable or potentially dangerous latex formula]

The total words typed is(BTW I ignored units for convenience. If you are confused about what to multiply then just look at the units):
[unparseable or potentially dangerous latex formula]

The words typed up by Donna is [unparseable or potentially dangerous latex formula]

Percent = [unparseable or potentially dangerous latex formula]
HIGHS 2013 MEETS:
NS: 220(TMSCA STATE)
CA: 232(B)
MA: 274(District)
SC: 220(A)
CS: 212(VCM1)
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