A boy takes 10 minutes to reach school at an avreage speed of 12km/hour.If he has to reach school in 15 minutes.What should be the average speed?
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12km/hr= 200mtr/min.
10 Minutes = 2000mtr or 2km
Now,
Time= 15min.
Dis.= 2000mtr.
Speed= 400mtr/3min
=8km/hr
10 Minutes = 2000mtr or 2km
Now,
Time= 15min.
Dis.= 2000mtr.
Speed= 400mtr/3min
=8km/hr
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