SOLUTION: 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).

Algebra ->  Angles -> SOLUTION: 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).       Log On

Let x be the inputted energy.


Then the problem says


    0.7x = 49 kWh.


It means


    x =  kWh = 70 kWh.    ANSWER