pH of a Mixture

Calculate the pH of a mixture of equal parts 2.0 M HF and 1.0 M HOCl. Also find the concentration of OCl##^-## and F##^-## ions in the solution. The K##_a## of HF = 7.2 x 10##^{-4}##, K##_a## of HOCl = 3.5 x 10##^{-8}##