Question 3
The path from Little Red Riding Hood to Grandma has ups, downs and flat portions. When walking, LRRH goes up two times slower and goes down two times faster than on flat ground. When riding her bike, she goes up three times slower and goes down three times faster than on flat ground.
LRRH noticed that, when walking, the way back home from Grandma takes 18 minutes less than the way from home to Grandma, and when she rides her bike, the way back home from Grandma takes 20 minutes less than the way from home to Grandma. By what percentage is LRRH's speed larger by bike than by foot?
LRRH noticed that, when walking, the way back home from Grandma takes 18 minutes less than the way from home to Grandma, and when she rides her bike, the way back home from Grandma takes 20 minutes less than the way from home to Grandma. By what percentage is LRRH's speed larger by bike than by foot?