document.write( "Question 972166: Hakim invested $15,000. He put part in a term deposit that paid 4% per annum, and the remainder in T - bills at 5% per annum. After one year the total interest earned was $690. How much did Hakim invest at each rate? \n" ); document.write( "
Algebra.Com's Answer #594543 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! x=4% investment amount \n" ); document.write( "15000-x= 5% investment amount\r \n" ); document.write( "\n" ); document.write( "690=.04x + .05 (15000-x) since the interest earned is the principal *rate* time, which is one year, or 1\r \n" ); document.write( "\n" ); document.write( "690=0.04x+ 750-.05x \n" ); document.write( "-60=0.01x \n" ); document.write( "multiply by (-100)\r \n" ); document.write( "\n" ); document.write( "$6000=x That makes $240 at 4% \n" ); document.write( "$9000=15000-x. That makes $450 at 5% ; total interest is 690. Checks. \n" ); document.write( " |