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 (Headbang) plz help me (Speechless)

Printable View

- Jun 19th 2010, 11:11 PMLaylaSamQuadratic help!!
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 (Headbang) plz help me (Speechless) - Jun 19th 2010, 11:50 PMGrandad
Hello LaylaSamSuppose that Jon walks at kph. Then Marnie walks at kph.

Using the formula

Since Jon takes hour more than Marnie, we get:

, since is impossible.

So Jon walks at 4 kph and Marnie at 5 kph.

Grandad - Jun 19th 2010, 11:52 PMLaylaSam
Omg ur a genious!!! :)