Myrna is paid a salary of $250 a week plus 2% commission on weekly sales over $12,500. Her sales last week totaled $21,200. What were her total earning for the week?

Myrna earned $674 for that week.

Myrna earns 2% commission IF the weekly sales is over $12,500. Since $21,200 is over $12,500. We can imply the 2% commission into Myrna's weekly pay.

Step-by-step explanation:

1) Multiply last weeks sells by. 02

$21,200 *.02 = $424

2) Add $424 to Myrna's $250

$424 + $250 = 674