SOLUTION: Lori has been hired to build the frame and outer walls of the house. The exterior walls will be made of 3/8" dry wall, 3 1/2" wide studs, 1/4"thick exterior plywood, and 5/16" thic

Question 178462: Lori has been hired to build the frame and outer walls of the house. The exterior walls will be made of 3/8" dry wall, 3 1/2" wide studs, 1/4"thick exterior plywood, and 5/16" thick siding. How thick are the new walls altogether?
Please help! I am trying to help my son with his homework..thanks
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
we have to find a common denominator to make these like terms
:
3 1/2=7/2
:
3/8 inch
7/2 inch
1/4 inch
5/16 inch
:
LCD is 16 so write all fractions in 16ths
:
6/16
+
56/16
+
4/16
+
+5/16
______
75/16
:
which means the wall is 75/16 or 4 13/16 inches thick

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