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October 15th, 2017, 09:09 AM  #1 
Newbie Joined: Aug 2016 From: Pakistan Posts: 9 Thanks: 0  Pleae help me to solve this problem
A bicycle dealer allows 10% discount and still makes a profit of 20% on his bicycle. If the total profit he makes is Rs 150, find the list price of the bicycle.

October 15th, 2017, 10:56 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,767 Thanks: 1422 
profit, $P$, is 20% of dealer's cost, $C$ ... $P = 150 = 0.2C \implies C = 750$ discount price, $D = C+P = 900 \implies$ list price before 10% discount is $L= 1000$ 

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