Answer:
$ 2,805
Explanation:
Nora has a salary of $1200
The commission is paid on all sales above $4000 at 7.5%
Current month sales are $21,400.
Commissions to be paid will be 75% of $21,400
=7.5/100 x $21,400
=0.075 x 21,400
=$1,605
Nora's total earnings will be salary plus commissions
=$1,200 +$1,605
=$ 2,805
