marnie can walk 1km/m faster the jon. She completes a 20km hike 1 hour before him. Write an equation and solve it to find there walking speeds.
i cannot seem to solve this ahh plz help me
Hello LaylaSamSuppose that Jon walks at kph. Then Marnie walks at kph.
Using the formula
Marnie takes hours, and Jon takes hours.
Since Jon takes hour more than Marnie, we get:
Now multiply both sides by to get rid of fractions:
, since is impossible.
So Jon walks at 4 kph and Marnie at 5 kph.
Grandad