Puzzling Race
Algebra
Level
3
Lily, Betty, and Louisa race each other in a 100 meters race.
All of them run at a constant speed throughout the race.
Lily beats Betty by 20 meters.
Betty beats Louisa by 20 meters.
How many meters does Lily beat Louisa by?
Image credit: Flickr US Army (by CC 2.0)
by
Ritu Roy