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A watchmaker can build a watch for $90. She wants to make a $50 profit on top of his cost. What should she list the sale price of the watch at if she also wants to advertise a 30% discount on her watches?

Respuesta :

Answer: 200

Explanation: 90 + 50 = 140

x - x * 30% = 140

x * 70% = 170

x * 0.7 = 140

x = 140/0.7

x = 200

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