document.write( "Question 1022012: Laura had $8000 in her piggy band. She invested some money in Bank A at 9% per annum and the remainder of the money in Bank B at 10% per annum. If she made $740 in interest overall, how much did she put into each bank? \n" ); document.write( "
Algebra.Com's Answer #637699 by Herdaysoji(25)\"\" \"About 
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x amount to bank A, y amount to bank B
\n" ); document.write( "but x+y=8000 so
\n" ); document.write( ".'.y=8000-x
\n" ); document.write( "740=(y10/100)+(x9/100) i meant 10% & 9% of y and x
\n" ); document.write( "740=(10y+9x/100)
\n" ); document.write( "740=(10(8000-x)+9x/100)
\n" ); document.write( "740=(80000-10x+9x/100)
\n" ); document.write( "multiply r.h.s with 100
\n" ); document.write( "74000=80000-x
\n" ); document.write( "74000-80000=-x
\n" ); document.write( "-x=-6000
\n" ); document.write( "x=6000, y=2000
\n" ); document.write( "
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