. Katrina Byrd assembles motor mounts for C-207 executive planes. Her company has established a
differential piecework scale as an incentive to increase production due to backlogged orders. The pay
scale is $11.50 for the first 40 mounts, $12.35 for the next 30 mounts, $13.00 for the next 20 mounts,
and $13.40 for all remaining mounts assembled during the week. Katrina assembled 96 mounts last
week. What was her total gross pay?