MCQ
Three containers $\mathrm{C}_{1}, \mathrm{C}_{2}$ and $\mathrm{C}_{3}$ have water at different temperatures. The table below shows the final temperature $T$ when different amounts of water (given in litres) are taken from each containers and mixed (assume no loss of heat during the process)
$\begin{array}{|c|c|c|c|}\hline \mathrm{C_{1 }} & {\mathrm{C}_{2}} & {\mathrm{C}_{3}} & {\mathrm{T}} \\ \hline {1 l} & {2 l} & {-} & {60^{\circ} \mathrm{C}} \\ \hline {-} & {1 l} & {2 l} & {30^{\circ} \mathrm{C}} \\ \hline {2 l} & {-} & {1 l} & {60^{\circ} \mathrm{C}} \\ \hline {1 l} & {1 l} & {1 l} & {\theta} \\ \hline\end{array}$
The value of $\theta$ (in $^{\circ} \mathrm{C}$ to the nearest integer) is
- A$45$
- B$48$
- C$55$
- ✓$50$
