the speed of the log boat is about 20km un one hour how much time will they take to go 85 km?
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given
speed of the boat is 20km in I hour
so, in 1 km the distance will be 1/20
now 85 km
1/20×85= 17/4hr
multiply by 60
it will be 17×15hr
255 minutes or 4 hours 15 min
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