document.write( "Question 1117368: Lee bought a book for ¥300 and sold it to Wong at a profit of x%. Wong then sold the same book to Fei at a profit of x%.If Fei paid ¥(6x+0.75) more for the book than what Lee paid, find the value of x. \n" ); document.write( "
Algebra.Com's Answer #732451 by MathTherapy(10552)\"\" \"About 
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Lee bought a book for ¥300 and sold it to Wong at a profit of x%. Wong then sold the same book to Fei at a profit of x%.If Fei paid ¥(6x+0.75) more for the book than what Lee paid, find the value of x.
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These people CLAIM to be TUTORS!! Ha, ha, ha!!!\r
\n" ); document.write( "\n" ); document.write( "Since Lee bought the book for ¥300 and sold it to WONG at a profit of x%, he sold it for: \"300%281+%2B+x%2F100%29\"
\n" ); document.write( "Since Wong bought the book for \"300%281+%2B+x%2F100%29\", and sold it to FEI at a profit of x%, he sold it for: \"300%281+%2B+x%2F100%29%281+%2B+x%2F100%29\"
\n" ); document.write( "\"300%281+%2B+2%28x%2F100%29+%2B+%28x%2F100%29%5E2%29\" ======>
\n" ); document.write( "Amount Fei paid: \"300+%2B+6x+%2B+3x%5E2%2F100%29\" Amount Lee paid: ¥300
\n" ); document.write( "We then get: \"matrix%281%2C3%2C+300+%2B+6x+%2B+3x%5E2%2F100%2C+%22=%22%2C+300+%2B+6x+%2B+.75%29\"
\n" ); document.write( "\"matrix%281%2C3%2C+3x%5E2%2F100+%2B+6x+-+6x%2C+%22=%22%2C+300+-+300+%2B+.75%29\"
\n" ); document.write( "\"matrix%281%2C3%2C+3x%5E2%2F100%2C+%22=%22%2C+.75%29\"
\n" ); document.write( "\"matrix%281%2C3%2C+3x%5E2%2C+%22=%22%2C+75%29\" --------- Cross-multiplying
\n" ); document.write( "\"matrix%281%2C3%2C+x%5E2%2C+%22=%22%2C+75%2F3%29\"
\n" ); document.write( "\"matrix%281%2C3%2C+x%5E2%2C+%22=%22%2C+25%29\"
\n" ); document.write( "\"highlight_green%28matrix%281%2C5%2C+x%2C+%22=%22%2C+sqrt%2825%29%2C+%22=%22%2C+5%29%29\" \n" ); document.write( "
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