How do you measure time of 45 minutes if you know that a stick burns 60 minutes you have two sticks?
It will take exactly half the original time, i.e. 30 minutes to burn completely.
- 0 minutes – Light stick 1 on both sides and stick 2 on one side.
- 30 minutes – Stick 1 will be burnt out. Light the other end of stick 2.
- 45 minutes – Stick 2 will be burnt out. Thus 45 minutes is completely measured.
How would you get 30 minutes if you know that a rope takes 1 hour to burn and there are two ropes but they burn non linearly?
Update: Alright, here’s the answer. Light both ends of rope A and one end of rope B. After 30 minutes, rope A will be completely burned up and there will be 30 minutes of rope B left. Light the other end of rope B; it will burn up in 15 minutes.
How do you measure 50 minutes by only burning the ropes?
How would you measure 50 minutes? We can measure 30 minutes by burning one rope at both ends, so we can solve this if we can measure 20 minutes on the other rope. Since a single rope burns in 30 = 60/2 minutes when burned by two flames, we deduce a single rope will burn in 20 = 60/3 minutes with three flames.
How do you measure time with rope?
Two burning ropes riddle is little tricky but simple. Take one rope and burn it at both ends. At the same time, burn one end of the other rope. When it burns out, that`s 45 minutes.
How long does it take for rope to burn?
Each rope will take exactly 1 hour to burn all the way through. However, the ropes do not burn at constant rates—there are spots where they burn a little faster and spots where they burn a little slower, but it always takes 1 hour to finish the job.
How do you measure time with burning rope?
How do you burn a rope?
Quick Tip: Burning end of cord
- Cut cord with a sharp knife or scissors. You want a clean cut.
- Apply lighter to end of cord.
- Melt the end a bit.
- You may have to gently use your fingers to twist/push together cord to make a seal.
- Let the end cool off.
- Done! Your cord is less likely to fray/will no longer be frayed.
How long is a rope?
The Thai sen of 20 Thai fathoms or 40 m also means and is translated “rope”. The Somerset rope was a former English unit used in drainage and hedging. It was 20 feet (now precisely 6.096 m).
How long does it take for rope to burn up?
After 30 minutes, rope A will be completely burned up and there will be 30 minutes of rope B left. Light the other end of rope B; it will burn up in 15 minutes. Total time elapsed since starting the ropes on fire: 45 minutes. More about…
How do you calculate the total time to climb a rope?
So the total time can be calculated like below. First rope + Second 30 mins + Second rope 15 mins = 45 mins. Nope as already said in the question the ropes aren’t homogenous through out niether do they have the same density across their lengths so this strategy won’t work.
How long does it take to burn a logic puzzle?
Logic Logic puzzles require you to think. You will have to be logical in your reasoning. You have two ropes. Each takes exactly 60 minutes to burn. They are made of different material so even though they take the same amount of time to burn, they burn at separate rates.