A 20-Litre Container of Boiling Water Is Added to a 200-Litre

Multiple Choice

A 20-litre container of boiling water is added to a 200-litre bath of water having a temperature of 10 $\degree$ C. What is the final equilibrium temperature (in $\degree$ C) of the mixture?

A) 55
B) 36
C) 18
D) 66
E) 14