document.write( "Question 911006: Tony invested in two bank accounts, the first with 5% annual interest and the second with 8% annual interest. For the one with 8%, he deposited $1500 more than the one with 5%. After a year his interest was $510. How much did Tony deposit on each account originally? \n" ); document.write( "
Algebra.Com's Answer #552805 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 $510 \n" ); document.write( "0.08*x+0.05*y=510 \n" ); document.write( "We know that the account at 8% has $1500 more. \n" ); document.write( "x=1500+y \n" ); document.write( "We substitute for x \n" ); document.write( "0.08*(1500+y)+0.05*y=510 \n" ); document.write( "We multiply out \n" ); document.write( "120+0.08y+0.05*y=510 \n" ); document.write( "We combine like terms. \n" ); document.write( "0.13*y=390 \n" ); document.write( "Isolate y \n" ); document.write( "y=$3000 at 5% \n" ); document.write( "x=1500+y \n" ); document.write( "Calculate x \n" ); document.write( "x=$4500 at 8% \n" ); document.write( "Now,we know the total invested is: 7500 \n" ); document.write( "Total invested $4500+$3000=$7500 \n" ); document.write( "We check \n" ); document.write( "0.08*4500+0.05*3000=510 \n" ); document.write( "360+150=510 \n" ); document.write( "510=510 \n" ); document.write( "Since this statement is TRUE and neither x nor y is negative all is well. \n" ); document.write( "codeintmt \n" ); document.write( " \n" ); document.write( " |