document.write( "Question 1174696: Madel has PHP25,000 and she invested it into two accounts. One account earns 7% interest while the other earns 5% interest. After a year, she earned an interest amounting to PHP1,610. How much did she invest on the two account individually? \n" ); document.write( "

Algebra.Com's Answer #800150 by ikleyn(52921) $\"\"$ $\"About$

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document.write( "x invested at 7% and  (25000-x)  invested at 5%.\r\n" );
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document.write( "Your total interest equation is\r\n" );
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document.write( "    0.07x + 0.05*(25000-x) = 1610\r\n" );
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document.write( "From the equation,\r\n" );
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document.write( "    x =  = 18000.\r\n" );
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document.write( "ANSWER.  Php18,000  invested at 7%;  the rest  Php7,000 invested at 5%.\r\n" );
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document.write( "CHECK.   0.05*7000 + 0.07*18000 = 1610,  annual interest.    ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is a standard and typical problem on investments.\r
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\n" ); document.write( "\n" ); document.write( "If you need more details, or if you want to see other similar problems solved by different methods, look into the lesson \r
\n" ); document.write( "\n" ); document.write( " - Using systems of equations to solve problems on investment\r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "You will find there different approaches (using one equation or a system of two equations in two unknowns), as well as
\n" ); document.write( "different methods of solution to the equations (Substitution, Elimination).\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( " - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lesson is the part of this online textbook under the topic \"Systems of two linear equations in two unknowns\".\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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