1.

A candle of 6 cm long burns at the rate of 5 cm in 5 h and another candle of 8cm long burns at the rate of 6 cm in 4 h. What is the time required by each candle to remain of equal lengths after burning for some hours, when they starts to burn simultaneously with uniform rate of burning?

Answer»

1h
1.5h
2h
none of these

Answer :D


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