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Obviously...if you got something else I'd really be interested in the full path to your solution :D

Chips = 10 (30/3)
Horse = 4 (8/2)
Shoe = 2 (4-2)

Chips = 10
Horse = 4
Shoe = 1 (there are 2 of them)

(2 Chips) 20 + (1 Shoe) 1 + (1 Horse) 4 = 25

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