Burning Rope Timer Puzzle
1,270.0K Views
A man has two ropes of varying thickness (Those two ropes are not identical, they aren’t the same density nor the same length nor the same width). Each rope burns in 60 minutes. He actually wants to measure 45 mins. How can he measure 45 mins using only these two ropes.
He can’t cut the one rope in half because the ropes are non-homogeneous and he can’t be sure how long it will burn.
He will burn one of the rope at both the ends and the second rope at one end. After half an hour, the first one burns completely and at this point of time, he will burn the other end of the second rope so now it will take 15 mins more to completely burn. so total time is 30+15 i.e. 45mins.
Your Answer
More puzzles to try-
Cubicle painting
An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles ...Read More »A Man and a Dog
A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?Read More »Popular Probability Puzzle
This is a popular probability puzzle in which you have to select the correct answer at random from the four ...Read More »Get wetter the more it dries riddle
What gets wetter and wetter the more it dries?Read More »On which day does Suarez tell the truth?
Suarez is a strange liar. He lies on six days of the week, but on the seventh day he always ...Read More »How can the Alexander survive the fire?
Alexander is stranded on an island covered in forest. One day, when the wind is blowing from the west, lightning ...Read More »Hung without Help
Two cops walked into a room with no windows and found a dead man who obviously hung himself from the ...Read More »week days riddle
How many days in a week start with the letter T?Read More »Others Memories
It has memories, but none of its own, whatever is on my inside is what is shown. If it is ...Read More »Decode The Riddle
Decode below three cipher riddles 26 L of the A 7 D of the W 1000 Y in a MRead More »Which switch will turn on the light bulb puzzle
In the picture, bulb is connected to a switch via one cable. So can you find which switch will turn ...Read More »Take Out The Odd
Can you find the odd number in the following five choices? 1) 482636 2) 259807 3) 865195 4) 104739 5) ...Read More »Heart Categories
Can you find a word to match each category and starts with the letter in the left column? . . ...Read More »How many were going to St. Ives?
On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack ...Read More »Always in you riddle
Always in you, Sometimes on you; If I surround you, I can kill you. What am I ?Read More »How will you program it to work?
The LCD device should be able to tell the right time in the format HH:MM:SS in 12-hour format. You can ...Read More »Friday Puzzle
Draw the figure without raising your pencil.Read More »I like Mornings
? I am a 7 letter word. ? I like mornings ? If you remove my 1st letter you can ...Read More »A Bishop And A Rook Puzzle
A white rook and a black bishop of a standard chess set are randomly placed on a chessboard What is the probability ...Read More »With a neck but no head
Who is with a neck and no head, two arms and no hands?Read More »
Accenture Interview PuzzlesAdobe Interview PuzzlesAge RiddleAkbar Birbal PuzzlesAlgorithm PuzzlesAlphabet riddleAmazon Interview PuzzlesAnalytical MathematicsAptitude PuzzleBank PuzzlesBetting PuzzlesBrain TeasersCalendar PuzzlesCards PuzzlesChess Board PuzzleChess PuzzlesChristmas Puzzlecipher PuzzleCivil Services PuzzleClock time puzzleCognizant Interview PuzzlesCoins PuzzleComputational PuzzleconundrumCoronavirus PuzzleCoupondunia Interview PuzzleCritical Thinking Puzzledata analyticsData Structure Interview QuestionsDecode PuzzleDetective PuzzlesDice PuzzleDictionary Riddlesdifficult riddleEasy Math puzzlesEasy puzzlesEinstein puzzleEnglish RiddleFamily Tree Puzzlefamous puzzleFill in the blanks riddlesFinding Killer RiddlesFlipkart interview puzzlesFunny RiddlesGeneral KnowledgeGeographical PuzzleGoogle Code Jam 2014Google Interview PuzzlesGRE PuzzleHard Puzzle
