[ANSWERED] 1. If electrician A uses 27 2/3 feet and 45 3/4 feet from a spool of cable that had 221 1/2 feet and

1. If electrician A uses 27 2/3 feet and 45 3/4 feet from a
spool of cable that had 221 1/2 feet and electrician B uses 37 1/6 feet from
the same spool, how much cable is left on the spool?
2. A motor brush is 1 3/8 inches long. How long is it after
13/16 wears away?