Set Up an Equation That Can Be Used to Solve

question 71

Multiple Choice

Set up an equation that can be used to solve the problem. Solve the equation and answer the question asked.
-Dave can hike on level ground 3 miles an hour faster than he can on uphill terrain. Yesterday, he hiked 30 miles, spending 2 hours on level ground and 5 hours on uphill terrain. Find his average speed on level ground.

• A) 4.3 mph
• B) 3.4 mph
• C) 6.9 mph
• D) 6.4 mph

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