工地上的沙子比水泥多6吨,余下相等,用两天后,已知水泥还剩1/5,沙子还剩8吨,原有沙子多少吨
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工地上的沙子比水泥多6吨,余下相等,用两天后,已知水泥还剩1/5,沙子还剩8吨,原有沙子多少吨
工地上的沙子比水泥多6吨,余下相等,用两天后,已知水泥还剩1/5,沙子还剩8吨,原有沙子多少吨
工地上的沙子比水泥多6吨,余下相等,用两天后,已知水泥还剩1/5,沙子还剩8吨,原有沙子多少吨
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