Mental Math

Algebra Level 1

A and B are currently standing 200m apart on a straight road, and A starts walking along the road toward B.

On the other hand, B starts walking toward A for 60m, but then B turns left and goes 20m, and then turns right and goes 40m. Finally, he turns right and walks until he reaches the road again.

If A and B walk with the same speed, what is the distance between them when B gets back to the road?

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.