Marie Jenelle has plans to $4.85. replace She the light want to bulbs in buy a her house muffin with and a energy cake at a saver bake bulbs. A sale. regular The cake light bulb is on sale costs for $0.55 and $3.45. has an How electricity much can cost of Marie $0.00420 spend on per hour. a An energy muffin? saver bulb cost $5.00 and has electricity cost of $0.00105 per hour. For how many hours of use is it cheaper to use an energy saver bulb than a regular bulb?
Marie has $4.85. She want to buy a muffin and a cake at a bake sale. The cake is on sale for $3.45. How much can Marie spend on a muffin? Jenelle plans to replace the light bulbs in her house with energy saver bulbs. A regular light bulb costs $0.55 and has an electricity cost of $0.00420 per hour. An energy saver bulb cost $5.00 and has electricity cost of $0.00105 per hour. For how many hours of use is it cheaper to use an energy saver bulb than a regular bulb?
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