commission based pay

Marion receives a monthly base salary of $1000. On the first $10,000 of sales above his monthly quota of $20,000, she is paid a commission of 8%. On any additional sales, the commission rate is 10%. What were his gross earnings for the month of August, in which he had sales amounting to $38,670?


Base sallary + com1 + com2

1000 + 30,000 * (0.10 ) ? +

COM 1 = 0.08 * 20,000 ( i think )
com 2 = 0.10 * 18,670 ?

His sales of $38,670 consist of the quota of $20,000 (for which he receives no commission) plus $10,000 at the 8% commission rate plus $8,670 at the 10% commission rate.

Gross earnings = Base salary + commission 1 + commission 2 = $1000 + ($10,000 * (0.08)) + ($8,670 * (0.10))

- Hollywood