2500 meters is longer than 3 kilometers. This is because 1 kilometer is equal to 1000 meters. Therefore, 3 kilometers is equal to 3000 meters, which is shorter than 2500 meters.
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Well, isn't that a happy little question! Yes, 3 km is longer than 2900 m. You see, 1 km is equal to 1000 m, so 3 km would be 3000 m, which is indeed longer than 2900 m. Just a little math magic to brighten your day!
It only takes one . . . (1,000 meters/km)3 .
20 km per hour.
Convert everything to a common unit, then compare. Note that 1 km = 1000 m.
150 km in 3 hours is 150/3 = 50 km per hour.