document.write( "Question 635216: Mrs. Garcia invests a total of $9099 in two savings accounts. One account yields 7.5% simple interest and the other 9% simple interest. She earned a total of $699.84 interest for the year. How much was invested in each account? \n" ); document.write( "
Algebra.Com's Answer #400254 by mananth(16946)\"\" \"About 
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Account I 7.50% per annum ------------- Amount invested =x
\n" ); document.write( "Account II 9.00% per annum ------------ Amount invested = y
\n" ); document.write( " 9099
\n" ); document.write( "Interest----- 699.84
\n" ); document.write( "
\n" ); document.write( "Account I 7.50% per annum ---x
\n" ); document.write( "Account II 9.00% per annum ---y
\n" ); document.write( "Credit on both cards
\n" ); document.write( "x + y= 9099 -------------1
\n" ); document.write( "Interestto be paid on both
\n" ); document.write( "7.50% x + 9.00% y= 699.84
\n" ); document.write( "Multiply by 100
\n" ); document.write( "7.5 x + 9 y= 69984.00 --------2
\n" ); document.write( "Multiply (1) by -7.5
\n" ); document.write( "we get
\n" ); document.write( "-7.5 x -7.5 y= -68242.50
\n" ); document.write( "Add this to (2) we get
\n" ); document.write( "1.5 y= 1741.5
\n" ); document.write( "divide by 1.5
\n" ); document.write( " y = 1161
\n" ); document.write( "
\n" ); document.write( "Account I 7.50% $ 7938
\n" ); document.write( "Account II 9.00% $ 1161
\n" ); document.write( "
\n" ); document.write( "CHECK
\n" ); document.write( "7938 --------- 7.50% ------- 595.35
\n" ); document.write( "1161 ------------- 9.00% ------- 104.49
\n" ); document.write( "Total -------------------- 699.84
\n" ); document.write( "
\n" ); document.write( "m.ananth@hotmail.ca
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