An electrostatic precipitator with a specific collection area (A/Q) of 300 ft²/1000 acfm is found to have an actual ocerall collection efficiency of 97.0 percent. If the value of A/Q is increased to 400 ft²/1000 acfm, estimate the anticipated overall collection efficiency on the basis of a constant effactive migration velocity and using (a) the Deutsch equation and (b) the Hazen-type equation with an value of 4.