Answer :
If a salesman earns 20% commission on all merchandise that her sells and last month he sold $600 worth of merchandise, the commission that he earned last month is $120
The total cost of the merchandise that he sold = $600
The commission percentage on all the merchandise that he sells = 20%
The commission that he earned last month = The total cost of the merchandise that he sold × (The commission percentage on all the merchandise that he sells/100)
Substitute the values in the equation
The commission that he earned last month = 600 × (20/100)
= 600 × 0.2
= $120
Hence, if a salesman earns 20% commission on all merchandise that her sells and last month he sold $600 worth of merchandise, the commission that he earned last month is $120
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