View All num of num See all Photos innoPath www.innopath.com Unclaimed Profile Overview Reviews Salaries Interviews Jobs Photos Benefits 49 Reviews 76 Salaries 9 Interviews Follow Add Interview Follow Add Interview Interview Question Senior Software Engineer Interview Sunnyvale, CA innoPath there are 2 ropes. Each takes 1 hour to totally burn off . But you cant say that half rope burns in 30 min. It is of irregular thickness. Using these 2 ropes how do you measure 45 minutes. Tags: See more , See less 8 Answer Add Tags Answer Interview Answer 2 Answers ▲ 2 ▼ burn first rope at 2 ends. Burn second rope on one end only. Now we know that it is half hour when first burns totally. at this time burn the second rope at other end also. Now the remianing of the second rope takes 15 min Interview Candidate on Aug 13, 2010 ▲ 0 ▼ Unfortunately, since the ropes do not burn at constant rates, you cannot assume that each half of a doubled-over rope will take 30 minutes to burn.If the question stipulates that the ropes burn at a constant rate and you don't have a way to measure them, this answer works. Correction to Answer/Question on Apr 18, 2013 Interviews > Senior Software Engineer > innoPath Add Answers or Comments To comment on this, Sign In or Sign Up.