A candle 8 cm long burns at the rate of 3 cm in 3 hours, whereas another one 10 cm long burns at the rate of 3 cm in 2 hours. What are the lengths of the candles when they are of same length, if they started burning simultaneously? a) 4.0 cm c) 8.0 cm b) 6.0 cm d) 2.5 cm
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option (a) 4.0cm is the answer
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