2 Ropes and lighter puzzle

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You are given 2 ropes and lighter.
Each of 2 ropes has following property if u light 1 end it will take 1 hr to burn other end. Its doesn't necessarily burn at uniform rate . How can u measure a period of 45min...?

Comments

  1. anil13 September 2014 at 03:58

    1. Measuring 30 min: Burn Rope 1 at both ends and Rope2 at only one end
    2. Measuring next 15 min: Burn Rope2 at both ends

    ReplyDelete

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