SOLUTION: If i ride my bike 8 miles and then walk 4 miles it takes me 3hrs. If i walk 1/4 the rate that i ride, how fast did i ride my bike?

Question 297242: If i ride my bike 8 miles and then walk 4 miles it takes me 3hrs. If i walk 1/4 the rate that i ride, how fast did i ride my bike?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = your speed riding your bike
Then, your speed walking is
In words:
(time spent walking and biking) = (distance biking/biking speed) + (distance walking/walking speed)

Multiply both sides by

The speed biking is 8 mi/hr
check:

OK
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