The approximate distance from Earth to the Sun is 1.5 x 10⁸ kilometers. The speed of light is approximately 3 x 10⁵ kilometers per second. How long does it take for light from the Sun to reach Earth, in seconds?
✓ Correct Answer: Option B
Time = Distance / Speed = (1.5 × 10⁸) / (3 × 10⁵). Divide the coefficients: 1.5/3 = 0.5. Subtract exponents: 10⁸/10⁵ = 10³. So, 0.5 × 10³ = 5 × 10² seconds.
📚 About This GED Exam Prep Practice Question
This 3-level GED Exam Prep question from the Mathematical 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 GED Exam Prep practice test or use flashcards for spaced repetition review.