Multiple choice

During a track race, Jack ran 800 meters in 2 minutes. His friend, Tom, ran the same distance in 1.5 minutes. If they were to run a 1,600-meter race at the same speeds, by how many minutes would Tom finish ahead of Jack?

  1. 30 seconds

  2. 1 minute

  3. 1.5 minutes

  4. 2 minutes

  5. 2.5 minutes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Jack's speed = 800m / 2min = 400m/min. Tom's speed = 800m / 1.5min = 533.33m/min. For 1600m, Jack takes 1600/400 = 4 min. Tom takes 1600/533.33 = 3 min. Difference = 1 minute.

AI explanation

Jack's speed is 800 meters divided by 2 minutes, giving 400 meters per minute, while Tom's speed is 800 meters divided by 1.5 minutes, giving 1600/3 meters per minute. For a 1,600-meter race, Jack takes 1600/400 = 4 minutes, and Tom takes 1600 divided by (1600/3) = 3 minutes. The difference in their times is 1 minute, meaning Tom finishes ahead of Jack by that amount.

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