Respuesta :

So are you trying to find the number of different possible shelves? If yes then he answer is 30 because 2×3×5=30
Ok this will involve multiplication, So since a lumber company shelves are sold in 3 types of wood and 2 different widths and 5 different lengths you will multiply 3 and 2 and 5 and your answer will be 30.

3x(5x2)=10

10x3=30

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