解:方案一,分别购成人票和学生票: 5×40+3×10=230(元); 方案二,统一购团体票: 6×43=258(元); 方案三,7名学生和3名老师购团体票,剩下的学生购学生票: (3+7)×6+(40-7)×5 =10×6+33×5, =60+165, =225(元); 225元<230元<258元. 所以方案三最合算.


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