Candle
A candle of 6 cm long burns at the rate of 5 cm in 5 hrs and another candle of 8 cm long burns at the rate of 6 cm in 4 hrs. What is the time required by each candle to remain of equal lengths after burning for some hours, when they start to burn simultaneously with uniform rate of burning ?
Note : Answer is an integer.
The answer is 4.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
(6-x) = (8-1.5x) , solving equation we get x = 4 cm