$6$$$2,320=13,920$ total sales

$0\mathrm{.}12$$$13,920=q,$ commission

$5.$ Custom Castings, Inc. pays its employees on a piece$-$rate basis of $$1\mathrm{.}28$ for each acceptable piece produced. What gross pay was earned by an employee whose production of $483$ pieces included $9$ pieces that did not pass inspection?

$(483-9)$$$1\mathrm{.}28=474$$$1\mathrm{.}28=q,$ gross pay

$474$

$6.$ lan Zander earns extra money by refinishing wood floors. His charge is based on the size and condition of the floor. Last month, he refinished $6$ floors for $$140$ each, $2$ floors for $$220$ each and $1$ floor for $$178.$ What average amount per floor did he earn for the month?

$6$$$140=$$$8402$$$220=$$$4401$$$178=$$$178,9$ floors $$1,458$ total earnings $$1,4589=$ average earnings per finished floor

Chapter $2$