SOLUTION: man rode his bike six miles to work. The wind reduced his average speed on the way home by 2 mph. The round trip took one hour 21 minutes. How fast was he riding on the way to

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Question 706000: man rode his bike six miles to work. The wind reduced his average speed on the way home by 2 mph. The round trip took one hour 21 minutes. How fast was he riding on the way to work?

Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
To work: r%2At%5B1%5D=6
From work: %28r-2%29%2At%5B2%5D=6
Note that t1=6/r, and t2=6/(r-2)
t1 + t2 = %2821%2F60%29=6%2Fr%2B6%2F%28r-2%29,
find r.