FUN solving Quadratic equations :) 1. The problem statement, all variables and given/known data Marnie can walk 1km/h faster than Jon. She completes a 20 km hike 1 hour before him. Write an equation ans solve it and find their walking speeds. 2. Relevant equations speed= distance/time the quadratic equation 3. The attempt at a solution i dont no how to start :( but i no that for Marnie: S= D/T and Jon S= D/T-1 because hes an hour slower.