document.write( "Question 909514: Tyler has two savings accounts that his grandparents opened for him. The two accounts pay 10% and 12% in annual interest; there is $700 more in the account that pays 12% than there is in the other account. If the total interest for a year is $260, how much money does he have in each account? \n" ); document.write( "
Algebra.Com's Answer #551885 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! We don't know the total invested. \n" ); document.write( "We know the difference in the two accounts. \n" ); document.write( "We know that the interest for the two accounts is $260 \n" ); document.write( "0.12*x+0.1*y=260 \n" ); document.write( "We know that the account at 12% has $700 more. \n" ); document.write( "x=700+y \n" ); document.write( "We substitute for x \n" ); document.write( "0.12*(700+y)+0.1*y=260 \n" ); document.write( "We multiply out \n" ); document.write( "84+0.12y+0.1*y=260 \n" ); document.write( "We combine like terms. \n" ); document.write( "0.22*y=176 \n" ); document.write( "Isolate y \n" ); document.write( "y=$800 at 10% \n" ); document.write( "x=700+y \n" ); document.write( "Calculate x \n" ); document.write( "x=$1500 at 12% \n" ); document.write( "Now,we know the total invested is: 2300 \n" ); document.write( "Total invested $1500+$800=$2300 \n" ); document.write( "We check \n" ); document.write( "0.12*1500+0.1*800=260 \n" ); document.write( "180+80=260 \n" ); document.write( "260=260 \n" ); document.write( "Since this statement is TRUE and neither x nor y is negative all is well. \n" ); document.write( " \n" ); document.write( " |