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Table feet, table, chair, chair back.
Setup: Make an X-square table.

x/5+4x/30=25

6x+4x=750

x=75

75/5= 15

25- 15= 10

Answer: It can be made into 75 square tables, with 15 cubic centimeters of wood for the table top and 10 cubic centimeters of wood for the table legs.

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