Question in-aug
In August, a car dealer completed more than times the number of sales the car dealer completed in September. In August and September, the car dealer completed sales. How many sales did the car dealer complete in September?
In August, a car dealer completed 15 more than 3 times the number of sales the
Hard-difficulty · SAT Math · Systems of Two Linear Equations — Substitution method. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
The correct answer is . It’s given that in August, the car dealer completed more than times the number of sales the car dealer completed in September. Let represent the number of sales the car dealer completed in September. It follows that represents the number of sales the car dealer completed in August. It’s also given that in August and September, the car dealer completed sales. It follows that , or . Subtracting from each side of this equation yields . Dividing each side of this equation by yields . Therefore, the car dealer completed sales in September.
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