Slow Food Movement

Algebra Level 3

It takes me 45 minutes to make dinner. If my four-year-old daughter "helps" me, it takes 60 minutes. Suppose my wife takes 30 minutes to make dinner by herself. How many minutes will it take her if our daughter "helps" her?

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 5 million people

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