A company has 2,000 4-foot, 4-lamp fixtures with 34-W T12 lamps and electromagnetic ballasts.The lights are on an average of 75 hours per week for...

Q3. A company has 2,000 4-foot, 4-lamp fixtures with 34-W T12 lamps and electromagnetic ballasts. The lights are on an average of 75 hours per week for 50 weeks per year. It is proposed to replace the current T12 lamps with 32-W T8 long-life low mercury lamps and to replace the current magnetic ballasts with normal output electronic ballasts. The time required to replace of old lamps is 0.25 hours/fixture. The time required to install new lamps and ballasts is 0.50 hours/fixture. Fill in the shaded areas in the table below.