Math
posted by Lysa .
A group medical practice has 40,000 patients. Charts vary in thickness from 1/4 to 1 inch thick. The average of all charts is 1/2 inch thick. Using the average 1/2inch thickness, how many inches of shelf space will be required for 40,000 charts? The medical practice uses 48inchwide shelving units, which hold 46 inches of files per shelf. There are eight shelves. This means each unit can hold 8 * 46 inches = 368 inches. How many shelving units does the practice need to store its patient records?
I got 20,000 Do I convert that to feet by dividing by 12

Math 
PsyDAG
If average of 1/2 inch per file, then there would be 2 * 8 * 46 files per unit.
2*8*46x = 736x = 40,000
Solve for x. 
Math 
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