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请教一道关于方程求解的数学题

At a fruit stand yesterday, the price of each apple was $0.10 more than the price of each orange. What was the total revenue from the sale of oranges at the fruit stand yesterday? (1) The number of oranges sold at the fruit stand yesterday was 5 more than the number of apples. (2) The total revenue from the sale of apples at the fruit stand yesterday was $15.00 I chose E, but answer is C, why ?
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thanks !!

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同意选E,有两个未知条件.

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