Agirl drove her bike at the rate of 10 moh and then after a flat tire she walked at the rate of 2 mph. the entire trip took 2 hours for a total of 16 miles. how long did she walk, and how long did she bike?

Let b be the biking time in hours

Let w be the walking time in hours

The entire trip took 2 hours



for a total of 16 miles

If we've biked b hours at 10 miles per hour, then we must have biked 10b miles.  Similarly for walking.





Subtracting,



hours

hours

Biked 90 minutes, walked 30 minutes.