April 18, 2015

Homework Help: Math

Posted by Kim on Friday, February 15, 2008 at 5:58pm.

I need serious help. Tried to work it out but I just couldn't get the correct answer.

Benjamin and olivia are putting a new floor in their kitchen. To get the floor up to the desired height, they need to add 1 /8ft to subfloor. They can do this in one of two ways. They can put 1/2in sheet on top of 5/8in board (note that the total would be 9/8ft or 1 /8ft). They could also put 3/8in board on top of 3/4in sheet.

here is a table that gives the price for each sheet of plywood

1/8in $9.15
1/4in $13.05
3/8in $14.99
1/2in $17.88
5/8in $19.13
3/4in $21.36
7/8in $25.23
1in $28.49

1. what is the combined price for a 1/2in sheet and a 5/8 sheet?

2. what is the combined price for a 3/8in sheet and 3/4in sheet?

3. what other combination of sheets of ply wood yields the need 1 1/8in thickness?

4. of the four combinations, which is most economical?

5. the kitchen is to be 12ftx12ft. Find the total cost of the plywood you have suggested in qusetion 4

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