Bridge Crossing in Minimal Time
A family is trapped in a jungle. There is a bridge which can lead them to safety. But at one time, the bridge can only allow two people to pass through. Also, all of them are afraid of the dark and thus, they can’t go alone.
Father takes 1 minute to cross, the mother takes 2 minutes, the son takes 4 and the daughter takes 5 minutes. While crossing the time taken will be according to the slower one. How can they all reach the other side in the minimum possible time?
Step 1: Father and Mother go together, crosses the bridge in 2 Min.
Step 2: Father leaves mother at the other end and returns in 1 Min.
Step 3: Son and Daughter go together, cross in 5 Min.
Step 4: Mother who is at the other end returns in 2 Min.
Step 5: Father and Mother cross again, completes in 2 Min.
Total Time taken: 2 + 1 + 5 + 2 + 2 = 12 Min.
More puzzles to try-
Driving car riddleYou are driving a car at full speed. Suddenly you see a little boy, an old woman and a traffic ...Read More »
Read and AnswerWhat is the word or phrase below? R | E | A | DRead More »
Letter spelled bothwayWhat seven letter word is spelled the same way backwards and forewords?Read More »
Make a sentenceMake a sentence consisting of three words that have the whole alphabet.Read More »
Connecting 9 dots with 4 line puzzleLook at the 9 dots in this image. Can you draw 4 straight lines, without picking up your pen, that ...Read More »
Gold Chain PuzzleA man has a gold chain with 7 links. he needs the service of a laborer for 7 days at ...Read More »
What did he write?There was once a college that offered a class on probability applied to the real world.The class was relatively easy, ...Read More »
A,B,C ology puzzleAstrology starts with the alphabet A. Biology starts with the alphabet B. Limnology starts with the alphabet L. Can you ...Read More »
WHICH IS THE FAKE COINYou have twelve coins. You know that one is fake. The only thing that distinguishes the fake coin from the ...Read More »
What tastes better than it smells?What tastes better than it smells??Read More »
Odd One OutYou can see three almost identical images below. Can you spot the odd one out from them?Read More »
Ping pong ball stuck into the pipe puzzleYour last good ping-pong ball fell down into a narrow metal pipe embedded in concrete one foot deep. How can ...Read More »
Growing lily PuzzleIn the middle of a round pool lies a beautiful water lily. The water lily doubles in size every day. ...Read More »
Sheep Mowing grassing riddleIf we tie a sheep to one peg it eats out a circle in grass. If we put a rope ...Read More »
Three digits riddleThere are three (3) digits. The tens place is 3 more than the ones place. The hundreds place is 2 ...Read More »
Car Parking and using lift riddleSix people park their car in an underground parking of a store. The store has six floors in all. Each ...Read More »
Square PuzzleCount number of squares in picture below ?Read More »
What Is Your Father’s Name?Jim’s teacher asked him his father’s name. He replied that his father’s name has 5 letters in it. His name ...Read More »
Without any R’sWhen crossing a Railroad, look out for the cars. Can you spell that, without any R’s?Read More »
What is a word made up of 4 letters?What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with ...Read More »