document.write( "Question 712414: Jerry borrowed $600 at 10 percent per year, simple interest, for three years. H ow much did he have to repay (principle+ interest) at the end of the three-year period? my solution :$600.00 amount borrowed at 10 percent year,$600.00 divided 10 percent =60.00 per year times 3 years =$180.00, 600+180 =780.00 repaided with (principal+interest) my answer just does't look right, can you help me? \n" ); document.write( "
Algebra.Com's Answer #437919 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! Jerry borrowed $600 at 10 percent per year, simple interest, for three years. H ow much did he have to repay (principle+ interest) at the end of the three-year period? my solution :$600.00 amount borrowed at 10 percent year,$600.00 divided 10 percent =60.00 per year times 3 years =$180.00, 600+180 =780.00 repaided with (principal+interest) my answer just does't look right, can you help me? \n" ); document.write( ". \n" ); document.write( "Your answer didn't account for the interest being added to the amount owed each year. \n" ); document.write( ". \n" ); document.write( "There is a formula for this: \n" ); document.write( "A = P(1+r)^t \n" ); document.write( "where \n" ); document.write( "A is amount after time t (what we're looking for) \n" ); document.write( "P is principal or amt you started with (600) \n" ); document.write( "r is the rate (.10) \n" ); document.write( "t is time in years (3) \n" ); document.write( ". \n" ); document.write( "A = P(1+r)^t \n" ); document.write( "A = 600(1+.10)^3 \n" ); document.write( "A = 600(1.10)^3 \n" ); document.write( "A = 600(1.331) \n" ); document.write( "A = $796.60\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |