The ratio of red to blue marbles in a bag is 5:3. If there are 24 blue marbles in the bag, what is the total number of marbles in the bag?
✓ Correct Answer: Option B
If 3 parts (blue marbles) correspond to 24 marbles, then 1 part = 24/3 = 8 marbles. The total ratio is 5+3 = 8 parts. So, total marbles = 8 parts * 8 marbles/part = 64.
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This 2-level GRE Exam Prep question from the Quantitative Reasoning 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.
How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free GRE Exam Prep practice test or use flashcards for spaced repetition review.