hard · GMAT Quant
In a certain retail store, the average price of a digital camera in Stock Room A is $240, and the average price of a digital camera in Stock Room B is $480. If the store combines the stock and the new average price of all cameras is $300, and there are 90 more cameras in Stock Room A than in Stock Room B
What is the total number of cameras in both stock rooms?
- 120
- 150
- 180
- 210
- 240
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