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)\"\" \"About 
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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
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