$7.$ A flash distillation process handles a feed of $150$ kg$/$h of a $40\%$ A $($more volatile$)$ and $60\%$ B mixture. The feed is heated to a temperature where the total pressure of the system is $1\mathrm{.}2$ times the vapor pressure of A in the mixture. Assuming ideal behavior, calculate the mass flow rates of the vapor and liquid outlet streams.