SOLUTION: Rico can drive 2 times as fast as Manuel can ride his bicycle. If it takes Manuel 3 hours longer than Rico to travel 42 miles, how fast can Manuel ride his bicycle?

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Question 1076325: Rico can drive 2 times as fast as Manuel can ride his bicycle. If it takes Manuel 3 hours longer than Rico to travel 42 miles, how fast can Manuel ride his bicycle?

Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
system%282r%2At=42%2Cr%28t%2B3%29=42%29

rt=21
t=21%2Fr

rt%2B3r=42
Already found a value of rt=21;
3r%2B21=42
3r=42-21
3r=21
highlight%28r=7%29-------Manuel's speed