Burning Rope Problem

How can he measure 45 mins using only these two ropes.

Burning rope problem.

Each rope will take exactly 1 hour to burn all the way through. After 30 minutes rope 1 is completely burnt and rope 2 still has 30 minutes worth of burning time in it. 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. Last week abbas raza of 3 quarks daily posed a list of logic problems to the site s readers.

Each rope burns in 60 minutes. Interview questions by jobs. First rope second 30 mins second rope 15 mins 45 mins. He actually wants to measure 45 mins.

He can t cut the one rope in half because the. Rope 2 would also burn to a point where only 30 mins are left for it to burn completely. But jumping rope alone won t be enough to help you lose weight. However the ropes do not burn at constant rates there are spots.

First lit rope 1 in both ends and one end of rope 2. This will burn the remaining rope in 15 minutes totaling the burning time to 45 minutes. For an average sized person jumping rope might even burn more than 10 calories a minute. If we ignite a rope at one end then it takes exactly one hour to completely burn.

Jumping rope can be a part of a diet and. 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. Posted by jason kottke nov 22 2006. Lit the other end of rope 2.

You have two ropes coated in an oil to help them burn. At this point burn the rope 2 at the remaining end and it will burn off completely in 15 mins. Let s first see the problem statement. So the total time can be calculated like below.

We have two ropes and a lighter with us. 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. Rope burning logic problem. 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.