A Solution Is 35 $\circ$ C the Vapor Pressure of Pure Benzene and Pure Carbon

Multiple Choice

A solution is 35.0% by mass carbon tetrachloride (CCl₄) in benzene (C₆H₆) at 20 ^$\circ$ C. The vapor pressure of pure benzene and pure carbon tetrachloride at this temperature is 74.61 mmHg and 91.32 mmHg, respectively. Calculate the vapor pressure of the solution at 20 ^$\circ$ C:

A) 58.1 mmHg
B) 78.2 mmHg
C) 80.5 mmHg
D) 82.9 mmHg
E) 83.0 mmHg