What is the speed of a runner who goes 9 miles in 1.5 hours?

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Prepare for the GMAS 6th Grade Mathematics Test with guided quizzes. Study using flashcards and multiple-choice questions with detailed hints. Succeed in your math exam!

Multiple Choice

What is the speed of a runner who goes 9 miles in 1.5 hours?

Explanation:
Speed is distance traveled per unit of time. To find the speed, divide distance by time. Here, the runner covers 9 miles in 1.5 hours. 9 ÷ 1.5 = 6, so the speed is 6 miles per hour. (Since 1.5 is 3/2, 9 ÷ (3/2) = 9 × (2/3) = 6.) If you picture the other options, they'd require different times: 4 mph would take 2.25 hours, 9 mph would take 1 hour, and 12 mph would take 0.75 hours. The given time fits exactly with 6 mph.

Speed is distance traveled per unit of time. To find the speed, divide distance by time. Here, the runner covers 9 miles in 1.5 hours. 9 ÷ 1.5 = 6, so the speed is 6 miles per hour. (Since 1.5 is 3/2, 9 ÷ (3/2) = 9 × (2/3) = 6.) If you picture the other options, they'd require different times: 4 mph would take 2.25 hours, 9 mph would take 1 hour, and 12 mph would take 0.75 hours. The given time fits exactly with 6 mph.

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