The power of energy saver bulbs, if the power used by a regular light bulb is 20 watts less than the twice the power used by energy-saver light bulb and the power used by regular bulb is 170 watt.

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Chapter 5, Problem 23AT

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To calculate: The power of energy saver bulbs, if the power used by a regular light bulb is 20 watts less than the twice the power used by energy-saver light bulb and the power used by regular bulb is 170 watt.

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