SOLUTION: In a walkathon to raise money for charity, Elisa walked a certain distance at 5 mi/h and then jogged twice that distance at 8 mi/h. Her total time walking and jogging was 2hr and 1
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: In a walkathon to raise money for charity, Elisa walked a certain distance at 5 mi/h and then jogged twice that distance at 8 mi/h. Her total time walking and jogging was 2hr and 1
Log On
Question 155510: In a walkathon to raise money for charity, Elisa walked a certain distance at 5 mi/h and then jogged twice that distance at 8 mi/h. Her total time walking and jogging was 2hr and 15min. How many miles long was the walkathon? The answer is 15mi but I cannot formulate the equation. Found 2 solutions by scott8148, Adam:Answer by scott8148(6628) (Show Source):
You can put this solution on YOUR website! There is an important equation of motion v-velocity, s-distance, t-time. We will use this to solve our problem. First we know the time 2 hours and 15 minutes that is 2.25 hours. We isolate t in the equation and get , we know two distances a and 2a (twice longer) and two velocities 5 and 8 mi/h and we can formulate
Cheers,
Adam
p.s. don't forget that a is not a complete distance ;)
(