document.write( "Question 1179882: A bulb is 70% efficient. It produces 49 kWh of light energy. How much energy is inputted? (include units and if necessary, round to 2 decimal places).\r
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Algebra.Com's Answer #809492 by ikleyn(52835) $\"\"$ $\"About$

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document.write( "Let x be the inputted energy.\r\n" );
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document.write( "Then the problem says\r\n" );
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document.write( "    0.7x = 49 kWh.\r\n" );
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document.write( "It means\r\n" );
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document.write( "    x =  kWh = 70 kWh.    ANSWER\r\n" );
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