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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three hours and forty minutes
SiPrYo:
how did u get that?? pls tell me the method or send a photo of it.
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three hours forty minutes
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