electricity le 0.10per KWh) $30 570 $300 Bulbs needed for 50k hours of use 1 42 Equivalent 50k hours bulb expense $35.95 I $19.75 $52.50 Life-Cycle Analysis for 50,000 hours: Total cost for 50k hours $85.75 Pan $352.50 Energy Savings over 50.000 hours. assuming 23 bulbs per household: 60 watt incand