document.write( "Question 156476: Ted put $4,000 in his savings account at Bank A. He put $ 6,000 in an account at Bank B that paid interest at twice the rate as Bank A. His total simple interest for the year was $640. What was the interest rate at each bank? \n" ); document.write( "

Algebra.Com's Answer #115427 by gonzo(654) $\"\"$ $\"About$

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$\"4000%2Ax+%2B+6000%2A2%2Ax+=+640\"$
\n" ); document.write( " $\"4000%2Ax+%2B+12000%2Ax+=+640\"$
\n" ); document.write( " $\"16000%2Ax+=+640\"$
\n" ); document.write( " $\"x+=+640+%2F+16000\"$
\n" ); document.write( " $\"x+=+.04\"$
\n" ); document.write( " $\"2%2Ax+=+.08+\"$
\n" ); document.write( "to test the answer
\n" ); document.write( " $\"4000+%2A+.04+%2B+6000+%2A+.08+=+640\"$
\n" ); document.write( "interest rate at bank A is .04.
\n" ); document.write( "interest rate at bank B is .08. \n" ); document.write( "

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