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Interview Question

Embedded Software Engineer Interview Boulder, CO

A brain teaser question where we have to find out

  45 minutes with the help of two ropes. Given that one rope burns completely in 1 Hr and the rate or burning is not consistent.
Answer

Interview Answer

2 Answers

0

I assume that both ropes have the same non consistency.
If you burn from one end it takes 1H.
If you burn it from both ends it takes 1/2 H.
To get 1/4 H, burn it from both ends and the point that in the first rope the fires got together.

Anonymous on Mar 11, 2013
0

I assume that both ropes have the same non consistency.
If you burn from one end it takes 1H.
If you burn the first rope from both ends it takes 1/2 H.
Immediately after the first rope burnt, burn the second rope from one end and the middle point that fires reached each other in the first rope.
To get 1/4 H, burn it from both ends and the point that in the first rope the fires got together.

Anonymous on Mar 11, 2013

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