Question: An 11.0-W energy-efficient fluorescent light bulb is designed to produce the same illumination as a conventional 40.0-W incandescent light bulb. Assuming a cost of $0.115/kWh for energy from the electric company,
Part A: How much money does the user of the energy-efficient bulb save during 275 h of use? (Give your answer to the nearest cent.)
______$
If possible just a brief explanation how you got the answer?