Burning Rope Problem

I d seen some of these problems before and i didn t have the time to work through the unfamiliar ones but my favorite was the very first question.

Burning rope problem.

After 30 minutes rope 1 is completely burnt and rope 2 still has 30 minutes worth of burning time in it. For an average sized person jumping rope might even burn more than 10 calories a minute. Posted by jason kottke nov 22 2006. We have two ropes and a lighter with us.

At this point burn the rope 2 at the remaining end and it will burn off completely in 15 mins. Each rope will take exactly 1 hour to burn all the way through. First lit rope 1 in both ends and one end of rope 2. Rope 2 would also burn to a point where only 30 mins are left for it to burn completely.

Interview questions by jobs. He can t cut the one rope in half because the. Jumping rope can be a part of a diet and. So the total time can be calculated like below.

Let s first see the problem statement. But jumping rope alone won t be enough to help you lose weight. Also the rope does not burn uniformly means one half of the rope may burn in let s say 10 mins while other half may take remaining 50 mins to burn. By the time rope one burns it will be 30 mins.

If we ignite a rope at one end then it takes exactly one hour to completely burn. Rope burning logic problem. How can he measure 45 mins using only these two ropes. Each rope burns in 60 minutes.

Last week abbas raza of 3 quarks daily posed a list of logic problems to the site s readers. The warming sun the cooling rain the snowflake drifting on the breath of the breeze the lightning bolt that frees the sky for you yet only eagles seem to. First rope second 30 mins second rope 15 mins 45 mins. This will burn the remaining rope in 15 minutes totaling the burning time to 45 minutes.

He actually wants to measure 45 mins. There are two ropes each rope takes 1 hour to burn. But either rope has different densities at different points so there s no guarantee of consistency in the time it takes different sections within the rope to burn. You have two ropes coated in an oil to help them burn.