Answer: The dollar sales volume will be $4000
Explanation:
Let x represent the amount of sales volume for which the two offers result in the same pay.
Company A offers a weekly salary of $360 plus a commission of 18% on their dollar sales volume. This means that the total value offered by company A for x sales volume is
360 + 0.18x
Company B offers a weekly salary of $720 plus commission of 9% on their dollar sales volume. This means that the total value offered by company B for x sales volume is
720 + 0.09x
For the two offers to be the same, the sales volume would be
360 + 0.18x = 720 + 0.09x
0.18x - 0.09x = 720 - 360
0.09x = 360
x = 360/0.09
x = $4000