A truck transports cargoes. First time, the truck transports 2/3 of the total cargoes, and the second time, it transports 1/3 of the remaining cargoes, finally the truck has 0.5 tons cargoes left. How many tons does truck have?
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A2.15
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B2.20
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C2.25
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D2.30
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E2.35
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正确答案: C