If a down jacket is sold at 50% off the price, it will earn 50 yuan, and at 60% off the price, it will earn 80 yuan

Suppose the cost of each piece is X Yuan and the price is y yuan
0.5y=x+50
6y = x + 80, x = 100, y = 300
So the cost of each piece is 100 yuan, and the price is 300 yuan

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