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OpenStudy (anonymous):

What is the efficiency of a device that gives you 10 units of useful energy for every 100 units you put in it? A. 1 B. 0.5 C. 0.1

OpenStudy (anonymous):

I think it would be .1. If you put in 100 and only got back 10 the ratio would be 1/10 which equals .1

OpenStudy (anonymous):

Thank you! :P

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