# A dealer marks his goods 35% above the cost price and then allows 15% discount on it. What is the cost price of an article on which he gains Rs.88.50?

Assume the cost price of the article = Rs CP

Marked price =(1+0.35) CP = 1.35 CP

15 percent discount =>  Selling price = 1.35 CP(1-0.15)

= 1.1475 CP

Gain = Rs 88.50 => Selling price - Cost price = 88.5

1.1475 CP - CP = 88.5

CP = 88.5/0.1475

= Rs 600

Hence the cost price of the article is Rs 600.

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