# A tortoise moves a distance of 100 metres in 15 minutes.what is the average speed of tortoise in km/h?

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by samypandit

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by samypandit

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Distance=100m or 0.1km

time taken=15min or 15/60hr=1/4hr

speed=distance/time=0.1÷1/4=0.4km/h

time taken=15min or 15/60hr=1/4hr

speed=distance/time=0.1÷1/4=0.4km/h

t=15 mins=15*60 sec

speed= distance 100

---------------- = ------------- m/s

time 15*60

1m= 1/1000 km

1s= 1/60*60 hr

so, 1m/s = 1/1000 divided by 1/60*60 = 1/1000 * 60*60/1 = 18/5

thus,

100 18 0.4 km/hr

------- * --------- =

15*60* 5