math
posted by Mary .
To make shelves for a bookcase, Nate needs 7 pieces of lumber, each 45 inches long. Nate has several 10foot lengths of lumber in the width and thickness he needs. How many of these 10foot boards will Nate use?

Each piece of 10footlong lumber has 120 inches (12*10).
You need to figure how many times 45 goes into 120 to find the number of shelves Nate can get from each 10foot long piece.
If you post your answer and the number of 10foot boards Nate will use, we'll be glad to check it. 
45 goes into 120 2 times.

Right. He can get 2 shelves out of each 10foot board.
Since he needs 7 shelves, how many pieces of lumber does he need? 
about 4

You're right. :) Nate needs 4 pieces of board to make his shelves.

Slight correction  Nate needs four 10foot long boards to make 7 shelves.

so the answer is 4. thanx!!! ur a big help!! went through it step by step.