The train went from the station to the sunflower away 15 kilometers travel time 10 minutes. This train runs at a rate of a few kilometers per hour.How to do.The train went only 10 minutes, but the calculation speed per hour.Speed per hour is the distance, train in time 1 hours.1 hours = 60 minutes.Method the relative hardware. To calculate the distance of a few kilometers that the train in time 60 minutes.The train went 10 minutes distance 15 kilometers" time "and" distance "relationship in style "proportional".The train went 10 x 6 minutes distance 15 x 6 kilometers. Add "time" 6 times to get 60 minutes must add"ระยะทาง "6 imaginable.The train went 60 minutes distance 90 kilometers, adjust the time is 60 minutes to get the speed per hour.This train runs at a rate of 90 kilometers per 60 minutes or 90 kilometers per hour.
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