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3????????100%?????/???????80%

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50?????60??????25?????20???????????

150?????60??????50?????40???????!(????????????????)

10??????1??????30??????1??????12??/18????????/???20??????

????????24×6+40=184??????48?????????280?????(?????????)

3????????????(5+25+50=80???)?????180????(??180???)??????!

2???????????(5+25=30???)?????40????(??80???)??????!

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4?????/???/???????33%??15???????90???????

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4?????/???/????=72.85???

5?????=295???

5?????/????=303???

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