James paid $204.00 for a DVD player that was priced originally at $240.00. What was the discount rate?

Question

this is a word problem i need help with 

Answer 1

 

The final price is  p1 = p(1 - %)   where p is the original price and % is the discount

 

Then,  p1= $204   and p = $240   Substituting:    $204 = $240*(1 - %)  ⇒  

 

% = 1 - $204/$240  = 0.15      Discount: 15%