The total Lower of Cost or Market is $38870.
We have,
Mountain Bikes: 15 units, cost: $710, market: $660, total cost: $10,650, total market: $9900, LCM: $9900
Skateboards: 20 units, cost: $260, market: $290, total cost: $7800, total market: $8700, LCM: $7800
Gliders: 29 units, cost: $810, market: $730, total cost: $23490, total market: $21170, LCM: $21170
Total cost: $41940
Total market: $39770
Total LCM: $38870
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