document.write( "Question 275132: geraldine has twice as much money invested at 5% simple annual interest as she does 4%. if her yearly income from these two investments is 350$, how much does she have nvested? \n" ); document.write( "

Algebra.Com's Answer #200716 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"a\"$ =amount invested at 5%
\n" ); document.write( "Let $\"b\"$ =amount invested at 4%
\n" ); document.write( "given:
\n" ); document.write( "(1) $\"a+=+2b\"$
\n" ); document.write( "(2) $\".05a+%2B+.04b+=+350\"$
\n" ); document.write( "Substitute (1) in (2)
\n" ); document.write( "(2) $\".05%2A2b+%2B+.04b+=+350\"$
\n" ); document.write( " $\".1b+%2B+.04b+=+350\"$
\n" ); document.write( " $\".14b+=+350\"$
\n" ); document.write( " $\"b+=+2500\"$
\n" ); document.write( "and
\n" ); document.write( " $\"a+=+2b\"$
\n" ); document.write( " $\"2500+=+2b\"$
\n" ); document.write( " $\"b+=+1250\"$
\n" ); document.write( " $\"2500+%2B+1250+=+3750\"$
\n" ); document.write( "She has $3750 invested \n" ); document.write( "

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