70. The graph below relates to two liquids A and B. If we mix equal masses of these two liquids, what will the density of the mixture be in grams per cubic centimeter? [Figure: Graph with vertical axis labeled $\text{cm}^3$ (volume) and horizontal axis labeled g (mass). Two lines A and B are shown; line A passes through approximately (12, 15) and line B passes through (12, 5).]
[(1)] $1/5$
[(2)] $1/6$
[(3)] $1/8$
[(4)] $2$
\textbf{70.} The graph below relates to two liquids A and B. If we mix equal masses of these two liquids, what will the density of the mixture be in grams per cubic centimeter?
\textit{[Figure: Graph with vertical axis labeled $\text{cm}^3$ (volume) and horizontal axis labeled g (mass). Two lines A and B are shown; line A passes through approximately (12, 15) and line B passes through (12, 5).]}
\begin{itemize}
\item[(1)] $1/5$
\item[(2)] $1/6$
\item[(3)] $1/8$
\item[(4)] $2$
\end{itemize}
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