Answer:
Option A is the correct choice.
Step-by-step explanation:
We have been given that Mark earns $135 for selling a $1500 refrigerator.
Since proportions states that two fractions are equal , so we will use proportions to find the same commission rate with the listed price from our given choices.
We can set proportion for commission and listed price as:
![\frac{\text{Commission}}{\text{Listed price}}=\frac{135}{1500}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7BCommission%7D%7D%7B%5Ctext%7BListed%20price%7D%7D%3D%5Cfrac%7B135%7D%7B1500%7D)
Let us compare our given choices one by one.
A. $36 commission on a $400 dryer.
Upon simplifying our proportion we will get,
We can see that commission rates for both items are equal, therefore, option A is the correct choice.
B. $40 commission on a $500 dryer sale.
Upon simplifying our proportion we will get,
We can see that both commission rates are different, therefore, option B is not a correct choice.
C. $210 commission on $1400 oven sale.
Upon simplifying our proportion we will get,
Since the commission rates are different, therefore, option C is not a correct choice.
D. $30 commission on a $600 freezer sale.
Upon simplifying our proportion we will get,
Since the commission rates are different, therefore, option D is not a correct choice.