What is the simplified ratio of 2 km to 400 meters?

This question tests your understanding of ratios and unit conversion. To simplify a ratio, both quantities must be in the same units.

• Correct Option B (5:01): First, convert 2 km to meters. Since 1 km = 1000 meters, 2 km = 2000 meters. The ratio becomes 2000 meters : 400 meters. Dividing both sides by their greatest common divisor, 400, yields 2000/400 : 400/400, which simplifies to 5:1.
• Distractor A (10:01): This would be incorrect conversion or simplification.
• Distractor C (2:01): This ratio would result if 2 km was 800 meters, or 400 meters was 1000 meters.
• Distractor D (1:02): This is the inverse of the correct ratio.