Question 1022229
A biker rode up a 20-km hill in 2 hours and down the hill in .5 hour without stopping . what was his average speed 
a)coming up the hill
To find km/hr, divide the kms by the hours.
20 km/2 hr = 10 km/hr
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b)going down the hill
See above
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c)the entire trip altogether
Same as a & b