SOLUTION: The five fastest roller coasters in the world are Fujiyama (Japan), Goliath (CA),Millenium Force (OH), Steel Dragon 2000 (Japan), and Superman the Escape (CA). The speeds , in mil

Question 42533: The five fastest roller coasters in the world are Fujiyama (Japan), Goliath (CA),Millenium Force (OH), Steel Dragon 2000 (Japan), and Superman the Escape (CA). The speeds , in miles per hour, of the first four coasters are 83, 85, 92, and 95 respectively. How fast can Superman the Escape travel if the average speed of all five coasters in no more that 91 miles per hour?
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
(83+85+92+95+X)/5=91 OR (355+X)/5=91 OR 455=355+X OR X=100MPH.
PROOF (355+100)/5=91 OR 455/5=91 OR 91=91
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