The Inventory of a Scrap Pile Is as Follows

Short Answer

The inventory of a scrap pile is as follows:
Channel iron, 87"
Plate steel, 147"
Key stock, 45"
Pipe, 69"
Flat iron strap, 208"
A pipe support is welded using the following materials from the scrap pile:
Channel iron, 61"
Plate steel, 106"
Key stock, 39"
Pipe, 22"
Flat iron strap, 189"
-From a pipe that is 56 inches long, you must cut one piece that is 12 inches and a second that is 20 inches. Once you are done, how long will the pipe be, in inches?