SOLUTION: A dealer sale an article for Rs 75 and gains as much percent as the cost price of the article. find the cost of article.

Algebra ->  Equations -> SOLUTION: A dealer sale an article for Rs 75 and gains as much percent as the cost price of the article. find the cost of article.      Log On


   

Question 188760: A dealer sale an article for Rs 75 and gains as much percent as the cost price of the article. find the cost of article.
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
let the original cost be x
:
x%2Bx%2F100%28x%29=75
:
x%2Bx%5E2%2F100=75
:
x%5E2%2B100x-7500=0
:
%28x-50%29%28x%2B150%29=0
:
x=50,-150.....reject the negative
:
x=$50 orginal cost