Question

in august, a car dealer completed 15 more than 3 times the number of sales the car dealer completed in september. in august and september, the car dealer completed 363 sales. how many sales did the car dealer complete in september?
92
87
90
83

Explanation:

Step1: Define variables

Let \( x \) be the number of sales in September. Then the number of sales in August is \( 3x + 15 \).

Step2: Set up equation

The total sales in August and September is 363, so \( x + (3x + 15) = 363 \).

Step3: Simplify equation

Combine like terms: \( 4x + 15 = 363 \).

Step4: Solve for x

Subtract 15 from both sides: \( 4x = 363 - 15 = 348 \). Then divide by 4: \( x = \frac{348}{4} = 87 \).

Answer:

87 (corresponding to the option "87")