Four friends are buying a boat. The first one contributes half the amount contributed by the others; the second - a third of the amount contributed by the others; the third - a quarter of the amount contributed by the others; fourth - 130 rubles. How much does the boat cost?
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 →