Mathematics, 28.05.2020 23:05, VamPL

19. My dad has 9 oak and maple boards from the lumber yard. Each oak board is 1 centimeter thick. Each maple board is 6 centimeters thick. When my dad stacks the boards, the stack is 29 centimeters thick. How many of each type of board does he have?

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19. My dad has 9 oak and maple boards from the lumber yard. Each oak board is 1 centimeter thick. Ea...