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**ziggy777** hello i wanted to ask a maths problem i'm in year 11 in victoria, australia. i'm doing general maths advanced which is the hardest maths in my year level.....ok here it is...a cyclist goes up a long slope at a constant speed of 15 km/h he turns around and comes down the slope at constant spped of 40 km/h find his average speed over a full circuit...this is the problem..i have doing maths from last 24 hours and i'm really tired i tried it at 1 pm last night but couldn't because i wanted to sleep anyway...i hope someone helps me....(the answer is 240/1 km/h i only want to know how did they get it ) thnx in advance