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)![]() ![]() You can put this solution on YOUR website! 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( " |