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Three independent mechanisms A,B and C have been incorporated for fuel saving in a car producing respectively 30%, 20%, and 40% efficiency. Assuming that they operate independently, what is the net fuel efficiency achieved?
Answer:
In all of the three mechanisms out of 100%
first looses 70% efficiency,
second looses 80% of 30%
efficiency of the first and third loses 60% of 80% of 30%
Then the lack of efficiency is 60% of 80% of 30% = 14.4
total efficiency is (100 - 14.4) = 85.6 (ans)
first looses 70% efficiency,
second looses 80% of 30%
efficiency of the first and third loses 60% of 80% of 30%
Then the lack of efficiency is 60% of 80% of 30% = 14.4
total efficiency is (100 - 14.4) = 85.6 (ans)
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