SOLUTION: 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?

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: 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?      Log On


   

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?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
15% discount...PAY 85%
.85(C + .30C) = $99
.85C(1 + .30) = $99
C = $99/.85(1.30) ~ $89.59