Jasmine allows 4% discount on the marked price of her goods and still earns a profit of 20%. What is the cost price of a shirt for her marked at Rs. 850?
Given,
MP of the shirt = Rs. 850
Discount = 4 %
Discount allowed = 
So,
Selling price of shirt = Rs.(850 – 34) = Rs.816
Profit earned by Jasmine = 20%
CP = 
Cost price of shirt = Rs.680
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