Programmer Trainee Interview Questions

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You are given two rope of equal length and a lighter. If you light a rope at one end, it takes an hour for it to completely burn, but it does not burn at a constant rate. For example, the first quarter of the rope might take 50 mins to burn and the remaining three quarters might only take 10 mins. Using this knowledge, how would you figure out when 45 mins have passed.
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Software Programmer

Interviewed at HSBC

3.9
Mar 1, 2011

You are given two rope of equal length and a lighter. If you light a rope at one end, it takes an hour for it to completely burn, but it does not burn at a constant rate. For example, the first quarter of the rope might take 50 mins to burn and the remaining three quarters might only take 10 mins. Using this knowledge, how would you figure out when 45 mins have passed.

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