Chem Prob. i am stack!! pls i need help!!!?

At 63.5oC, the vapor pressure of H2O is 175 torr, and that of ethanol, C2H5OH, is 400 torr. A solution is made by mixing equal mes of H2O and C2H5OH. (a) What is the mole fraction of ethanol in the solution? (b) uming ideal-solution behavior, what is the vapor pressure of the solution at 63.5oC? (c) What is the mole fraction of ethanol in the vapor above the solution? (Hint: use for this part Dalton’s law of partial pressures)