A classic riddle

There are four friends, A, B, C and D on a bank of a river. They have one boat, which can carry at max two people. Due to differnt physical strngths, A can cross the river in 1 minute, B in 2 minutes, C in 5 minutes and D in 10 minutes. But the rule is, when two are travelling, the slower one shall row the boat. (Example, if B and C are together, then C shall row and it shall take them 5 minutes to cross the river.)

Now the question is, what is minimum time that is needed so that ALL 4 of them are on the other side of the river.

Leave your answer in the comments section with explanation :)

0 Comments.
Start the discussion!

Are you looking for Real Happiness?

With a focus on positive psychology and passion for spreading happiness in the world, The Real Happiness Center is helping people find out what happiness means to them and how they can achieve it.

Message Us

Are you a Mental Health Leader?

If you are a psychologist, psychiatrist, counselor, therapist, educator or a mental health institution administrator we can help you improve your client satisfaction and generate higher revenues.