A) 48 minutes
B) 1 hours / 36 minutes
C) 36 minutes
D) 60 minutes
Correct Answer: C
Solution :
Take L.C.M \[(3,1)=3\,hr\] (Each candle bums at constant Rate) \[3-t:3-3t\] \[\frac{3-t}{3-3t}=\frac{2}{1}\] \[3-t=6-6t\] \[5t=3\] \[t=\frac{3}{5}\times 60\] \[\therefore \] \[\]You need to login to perform this action.
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