document.write( "Question 993310: A women invested some money in a credit union paying 5% annual simple interest and three times as much in a money market account paying 4.25% annual simple interest. If she earned $1,420 interest in one year, how much did she invest in each account? \n" ); document.write( "
Algebra.Com's Answer #612582 by addingup(3677)![]() ![]() You can put this solution on YOUR website! Let's call the money at 5% x. She earned: \n" ); document.write( "0.5x+0.425(3x)= 1,420 \n" ); document.write( "Multiply: \n" ); document.write( "0.5x+1.275x= 1,420 \n" ); document.write( "Add: \n" ); document.write( "1.775x= 1,420 \n" ); document.write( "Divide both sides by 1.775 \n" ); document.write( "x= 800 She has 800 at 5% and 3×800= 2,400 at 4.25% \n" ); document.write( "Proof: \n" ); document.write( "(800×0.5)+(2,400×0.425)= \n" ); document.write( "400+1,020= 1,420 We have the correct answer.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |