document.write( "Question 56757: Didn't know exactly where to put this problem. It's a worksheet and in the text book for the certain type of problem it's under Investment Problems.\r
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document.write( "Solve and check: \r
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document.write( "An investment of $1500 paid interest of $45 during a certain period. How much interest would an investment of $1200 invested at the same rate for the same length of time pay? \n" );
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Algebra.Com's Answer #38660 by tutorcecilia(2152)![]() ![]() You can put this solution on YOUR website! Since two items are being compared, set it up as a ratio problem: \n" ); document.write( "a/b=c/d and solve for the missing variable: \n" ); document.write( ". \n" ); document.write( "$1500/$45=$1200/x \n" ); document.write( "1500x=(45)(1200) [Cross-miltiply] \n" ); document.write( "1500x=54,000 \n" ); document.write( "x=54,000/1500 \n" ); document.write( "x=$36 \n" ); document.write( ". \n" ); document.write( "Check by plugging (x=36) back into the original equation. \n" ); document.write( " |