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Mathematics 24 Online
OpenStudy (anonymous):

Please Help? On a race track the speed for the first lap is 30 mph. What must be the average speed for a second one mile lap in order to have an average speed of 60 mph for the two laps (miles)?

OpenStudy (anonymous):

90mph 30 mph + 90 mph = 120 mph 120 mph/2 = 60 mph Hope I helped! :)

OpenStudy (anonymous):

where does the 90 come from?

OpenStudy (anonymous):

i dont get the problem :(

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