



 
Serena, Suppose the speed of the red boat is R mph. How far did the red boat go in 2 hours? What is twice the speed of the red boat? What is 30 mph slower than twice the speed of the red boat? This is the speed of the blue boat. How far did the blur boat go in 2 hours? This is 20 miles more than the distance the red boat travelled. Solve for R. Penny
 


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