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Pre-Algebra 10 Online
OpenStudy (anonymous):

Question: Greg and Anna drive uphill from Lakeshore to Valley View Point, and back downhill to Lakeshore. They notice that the drive uphill takes 10 minutes less than twice the time to drive downhill. The difference between the time taken to drive uphill and the time to drive downhill is 65 minutes. a.Write a pair of linear equations to represent the information given above. Be sure to state what the variables represent. b.Explain how you can change this pair of equations to one linear equation in one variable. c.Apply your method to find how long the drive uphill takes. Show your work

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