For a house with a total 20 of incandescent lamps rated at 60 W, determine the energy-saving potential if these lamps are replaced with

(a) 13 W CFLs and

(b) 7 W LED lamps. The lifespan of incandescent lamp, CFL, and LED lamp is 1,300, 8,000, and 30,000 h, respectively. Perform the analysis using the lifespan of the LED lamps.

Determine the best lamps to use, CFLs or LED lamps, if the cost of the incandescent lamp, CFL, and LED lamp is \($0.25,\) \($1.45,\) and \($45,\) respectively. Assume the cost of electricity is \($0.12/kWh\) and perform a life cycle cost analysis using the proper life cycle period and a 5% discount rate.