Adnan Hassan earned 5% commission as a sales trainee. After promotion to a sales associate, he earned 8% commission. His year-end
report showed $673,874 in total sales and $45,006.52 in commission.
What did his sales total as (a) a sales trainee and (b) a sales associate?

He earns $296780 as a Sales Trainee and $377094 as a Sales Associate

Explanation:

Given

Let x represents his sales as a sales trainee

Let x represents his sales as a sales associate

Total Sales:

Total Commission:

Required

Find x and y

Equations

--- (1)

--- (2)

Make  y the subject of formula in (1)

Substitute this in (2)

Open Bracket

Collect Like Terms

Divide through by -0.03

Recall that

Hence;

He earns $296780 as a Sales Trainee and $377094 as a Sales Associate