Question 116461
A regular light bulb uses 20 watts less than twice the power of an energy-saver light bulb.  If the regular bulb uses 170 watts how much does the energy-saver bulb use?
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Let "x" be the power used by the energy-saver bulb.
EQUATION:
170 = 2x-20
2x = 190
x = 95 watts (power used by the energy-saver bulb)
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Cheers,
Stan H.