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=Rs. 4100×850
=Rs. 34
Thus, SP of the shirt=Rs.850−34=Rs.816
Now, Profit earned by Jasmine=20%
Thus, CP=100×SP100+Profit% [from SP=CP+ profit on CP]
=Rs.100×816100+20
=Rs.100×816120
=Rs.680
Thus, the cost price of the shirt is Rs.680.