Answer
(c)
Work Step by Step
Energy efficiency for a series of processes is found by multiplying the efficiencies (as decimals):
$\text{Total efficiency}=0.35\times
0.90\times 0.90=0.2835\approx 28\%.$
The answer is (c).
Environmental Science for AP* (2nd Edition)
by Friedland, Andrew J.; Relyea, Rick
Published by
W. H. Freeman
ISBN 10:
1464108684
ISBN 13:
978-1-46410-868-6
Cumulative - AP Environmental Science Practice Exam - Section 1: Multiple-Choice Questions - Page EXAM-2: 10
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