SOLUTION: Could someone please help me on this...I am clueless. On Saturday morning, Lynn walked for 2 hours and then ran for 30 minutes. If she ran twice as fast as she walked and cove

Algebra ->  Length-and-distance -> SOLUTION: Could someone please help me on this...I am clueless. On Saturday morning, Lynn walked for 2 hours and then ran for 30 minutes. If she ran twice as fast as she walked and cove      Log On


   



Question 108052: Could someone please help me on this...I am clueless.
On Saturday morning, Lynn walked
for 2 hours and then ran for 30 minutes. If she ran twice
as fast as she walked and covered 12 miles altogether,
then how fast did she walk?

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
DISTANCE=RATE*TIME
2X+.5*2X=12
2X+X=12
3X=12
X=12/3
X=4 MILES PER HOUR WAS HER WALKING PACE.
PROOF
2*4+.5*2*4=12
8+4=12
12=12