Which conversion is correct for 1 ft per minute?

Which conversion is correct for 1 ft per minute?

• A. 66 feet per hour
• B. 50 feet per hour
• C. 1 chain per hour
• D. 120 chains per hour

Answer: (C)

Think of converting speed in steps: first swap minutes for hours, then swap feet for chains. There are 60 minutes in an hour, so 1 ft per minute equals 60 ft per hour. A chain is 66 ft, so to express 60 ft per hour in chains per hour you divide: 60 ÷ 66 ≈ 0.909. So the exact rate is about 0.91 chains per hour. Among the options, the one that uses chains per hour and is the best match for this speed is the description of 1 chain per hour. The other choices describe clearly different speeds: 66 ft per hour would be about 1.1 ft/min, 50 ft per hour corresponds to about 0.83 ft/min, and 120 chains per hour would be far larger (around 7920 ft/hour).

Think of converting speed in steps: first swap minutes for hours, then swap feet for chains. There are 60 minutes in an hour, so 1 ft per minute equals 60 ft per hour. A chain is 66 ft, so to express 60 ft per hour in chains per hour you divide: 60 ÷ 66 ≈ 0.909. So the exact rate is about 0.91 chains per hour.

Among the options, the one that uses chains per hour and is the best match for this speed is the description of 1 chain per hour. The other choices describe clearly different speeds: 66 ft per hour would be about 1.1 ft/min, 50 ft per hour corresponds to about 0.83 ft/min, and 120 chains per hour would be far larger (around 7920 ft/hour).