Can anyone help with a chemistry question? (partial pressures, mole fractions, and vapor pressures)?

Question

Here's a question from my AP Chemistry homework that is stumping me:

What would the mole fraction of toluene be in a solution for
which the partial pressure of benzene equaled that of
toluene? Assume only toluene and benzene vapor is present.

(Benzene: d = .8765 g/ml; Pvap = 384 torr (60 C); FW = 78.12 g/mol)
(Toluene: d = .8669 g/ml; Pvap = 133 torr (60 C); FW = 92.15 g/mol)


If you would, could you please explain your answer or show work? Thank you so much.

Answer 1

sorry, that flew way over my head.

Answer 2

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