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Mathematics group ticket painting
Solution: 1 Scheme: 28× 5+8×1=140+8 =148 yuan.

Scheme: group ticket: 1 adult ticket +29 children ticket. This plan costs the least.

(8+29× 5 )× (1-1/5) =153× 4/5 =122.4 yuan.

Therefore, the second option is the most economical, with a cost of 122.4 yuan.

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