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Five step method (Algebra)

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The area of a rectangle is 525 cm^2. Find the dimensions of a rectangle if the ratio of the length to the width is 7:3.
 Jun 21, 2012

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 #1
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[input]solve( x*y=525, x=7/3*y )[/input]
 Jun 22, 2012
 #2
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Now look carefully.....its 525

25 ( last 2 digits )!!

Now whnvr u get 25 at the last 2 digts!
Remembr 1 thing tht the answers will be multiples of 5!!

So answers shud be multiple of 5
therefore 7x5 & 3x5 are the answers!!
 Jun 24, 2012

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