If you walk 12 miles at 4 miles per hour, how many hours does the walk take?

If you walk 12 miles at 4 miles per hour, how many hours does the walk take?

• A. 3 hours
• B. 2 hours
• C. 4 hours
• D. 5 hours

Answer: (A)

Time equals distance divided by speed. At 4 miles per hour, you cover 4 miles each hour. To travel 12 miles, you need 12 ÷ 4 = 3 hours. So the walk takes 3 hours. (In 2 hours you’d cover 8 miles; in 4 hours you’d cover 16 miles, which doesn’t match the 12 miles.)

Time equals distance divided by speed. At 4 miles per hour, you cover 4 miles each hour. To travel 12 miles, you need 12 ÷ 4 = 3 hours. So the walk takes 3 hours. (In 2 hours you’d cover 8 miles; in 4 hours you’d cover 16 miles, which doesn’t match the 12 miles.)