To bake one hundred pancakes, mum needs 30 minutes, while Anya takes 40 minutes. Andryusha can eat 100 pancakes in one hour. Mum and Anya bake pancakes continuously, while Andryusha eats them non-stop. How long after the beginning of this process will there be exactly one hundred pancakes on the table?
Sign in or create an account to reveal answers, view the solution, and save your progress. Create a free account to unlock practice and keep track of your work.
One puzzle per day. Cryptarithm, Magic Square, Summit. No sign-up required to play.
Play daily puzzle →Interactive problems and curated lessons—water pouring, magic squares, knight's tour, and more.
Browse library →See how you rank. Top solvers by problems solved correctly. Sign in to climb the ranks.
View leaderboard →