document.write( "Question 1055658: a merchant marks a certain lamp up 30% above cost. then he gives a customer a 15% discount. if the final selling price of the lamp was 99$, what was the approximate cost price? \n" ); document.write( "
Algebra.Com's Answer #670843 by ewatrrr(24785)![]() ![]() You can put this solution on YOUR website! 15% discount...PAY 85% \n" ); document.write( ".85(C + .30C) = $99 \n" ); document.write( ".85C(1 + .30) = $99 \n" ); document.write( "C = $99/.85(1.30) ~ $89.59 \n" ); document.write( " |