How many yards are in 77 rods?

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Multiple Choice

How many yards are in 77 rods?

Explanation:
Unit conversion is what this question tests. A rod equals 16.5 feet, and a yard equals 3 feet, so 1 rod = 16.5/3 = 5.5 yards. Multiply by 77 rods: 77 × 5.5 = 77 × (5 + 0.5) = 385 + 38.5 = 423.5 yards. (Another way: 77 × 11/2 = 847/2 = 423.5.) So 423.5 yards is the correct total. Using 5 yards per rod would give 385, which isn’t the exact conversion.

Unit conversion is what this question tests. A rod equals 16.5 feet, and a yard equals 3 feet, so 1 rod = 16.5/3 = 5.5 yards. Multiply by 77 rods: 77 × 5.5 = 77 × (5 + 0.5) = 385 + 38.5 = 423.5 yards. (Another way: 77 × 11/2 = 847/2 = 423.5.) So 423.5 yards is the correct total. Using 5 yards per rod would give 385, which isn’t the exact conversion.

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