document.write( "Question 1054247: Savanah invested $13,000 in two different types of bonds. One bond earned 4% annual interest and the other earned 6% annual interest. After the first year, she earned $670 in interest. How much money did she invest in each bond? \n" ); document.write( "
Algebra.Com's Answer #669466 by addingup(3677)![]() ![]() You can put this solution on YOUR website! Total invested: 13,000 \n" ); document.write( "At 4%: x \n" ); document.write( "At 6%: 13,000-x \n" ); document.write( ": \n" ); document.write( "0.04x+0.06(13000-x) = 670 \n" ); document.write( "0.04x+780-0.06x = 670 \n" ); document.write( "-0.02x = -110 Divide both sides by -0.02 and remember -/- = + \n" ); document.write( "x = 5,500 this is how much is invested at 4% \n" ); document.write( "and 13,000-5,500 = 7,500 is invested at 6% \n" ); document.write( "-------------------------------- \n" ); document.write( "Check: \n" ); document.write( "5,500(0.04) = 220 \n" ); document.write( "7,500(0.06) = 450 \n" ); document.write( "Total .. .. .670 Correct \n" ); document.write( ": \n" ); document.write( "John \n" ); document.write( " \n" ); document.write( " |