The candles of equal length start burning at the same time. One of the candles takes 5 hours to burn completely whereas the other candle takes 4 hours to burn completely. After burning for certain time, the length of one candle is twice the length of other candle. Find the time the candles have already burned.

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Answers

2016-03-02T11:13:46+05:30
Let the lenght be x 
x+2x = 5 +4
3x= 9
x= 3
2x=6

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