document.write( "Question 120493This question is from textbook
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document.write( ": If someone can help explain these two word problems in explicit detail I would greatly appreciate it!!!! \r
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document.write( "1. Donna invested her $33,000 bonus and received a total of $970 in interest after one year. If part of the money returned 4% and the remainder 2.25%, then how much did she invest at each rate? \r
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document.write( "2. Tickets for a concert were sold to adults for $3 and to students for $2. If the total receipts were $824 and twice as many adult tickets as student tickets were sold, then how many of each were sold? \n" );
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Algebra.Com's Answer #88318 by stanbon(75887) ![]() You can put this solution on YOUR website! 1. Donna invested her $33,000 bonus and received a total of $970 in interest after one year. If part of the money returned 4% and the remainder 2.25%, then how much did she invest at each rate? \n" ); document.write( "--------------------- \n" ); document.write( "Let amt. at 4% be \"x\" ; interest on this is 0.04x dollars \n" ); document.write( "------------------------ \n" ); document.write( "Amt at 2.25% is \"33000-x\" ; interest is 0.0225(33000-x)= 742.50-0.0225x dollars \n" ); document.write( "------------------------- \n" ); document.write( "EQUATION: \n" ); document.write( "interest + interest = 970 dollars \n" ); document.write( "0.04x + 742.50-0.0225x = 970 \n" ); document.write( "0.0175x = 227.50 \n" ); document.write( "x = 13000 (amt invested at 4%) \n" ); document.write( "33000-x = 20000 (amt invested at 2.25%) \n" ); document.write( "------------------------------------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2. Tickets for a concert were sold to adults for $3 and to students for $2. If the total receipts were $824 and twice as many adult tickets as student tickets were sold, then how many of each were sold? \n" ); document.write( "----------- \n" ); document.write( "Let # of adult tiks sold be \"2x\" ; value = 3*2x = 6x dollars \n" ); document.write( "---------------- \n" ); document.write( "# of stud tiks sold is \"x\" ; value is 2x dollars \n" ); document.write( "--------------- \n" ); document.write( "EQUATION: \n" ); document.write( "value + value = 824 \n" ); document.write( "6x + 2x = 824 \n" ); document.write( "8x = 824 \n" ); document.write( "x = 103 (# of student tickets sold) \n" ); document.write( "2x = 206 (# of adult tickets sold) \n" ); document.write( "==================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |