A car goes 30 mph for 2 hours then 60 mph for 1 hour. What is the average speed?
✓ Correct Answer: Option A
Total distance = 30(2) + 60(1) = 120 miles. Total time = 3 hours. Average = 120/3 = 40 mph.
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This 2-level SAT Exam Prep question from the Math (Calculator) topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.
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