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What is the average speed?

Dougal drove for half an hour and covered a distance of 18km. What was Dougals average speed?

To work out the speed you need to work out what he would have covered in an hour. As dougal has covered 30min, all you need to do is times it by 2 to work out the hour. if you times 18km x 2 = 36km. Dougal would have be travelling at 36 km/h
09 March 2011
s=d/t s=18/0.5 of an hour s=36 km/h always remember by d s t if s=d/t if t=d/s if d=s*t
09 March 2011
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