document.write( "Question 650054: Sandro invested Php38,000 in the International Bank of the Philippines at 5% interest. How much additional money must he invest at 10% so that the annual income would be equal to 7.5% of his investment? \n" ); document.write( "
Algebra.Com's Answer #407145 by lwsshak3(11628)\"\" \"About 
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Sandro invested Php38,000 in the International Bank of the Philippines at 5% interest. How much additional money must he invest at 10% so that the annual income would be equal to 7.5% of his investment?
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\n" ); document.write( "let x=additional money invested at 10%
\n" ); document.write( "..
\n" ); document.write( "5%(38000)+10%x=7.5%(38000+x)
\n" ); document.write( "1900+0.10x=2850+.075x
\n" ); document.write( ".10x-.075x=2850-1900
\n" ); document.write( ".025x=950
\n" ); document.write( "x=38000
\n" ); document.write( "additional money invested at 10%=Php38,000
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