can someone help me please?

3. (35 pts) A mixture of methanol (CH40) and water (H20) is 60% methanol by weight. The specific gravity of the mixture is 0.80 and the flow rate of the mixture is 1.0 gals. a. (15) Calculate the individual mass flow rates of methanol and water in units of kg/s. b. (10) Calculate the molar flow rates of methanol and water in units of mol/s. c. (10) Calculate the mole fractions of methanol and water