The annual production in cement industry is subject to business cycles. The production increases for two consecutive years consistently by $18$ % and decreases by $12$ % in the third year. Taking $2008$ as the base year, what will be the approximate effect on cement production in $2012$ ?

24

% increase

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37

% decrease

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45

% increase

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60

% decrease

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Solution

The correct option is C $45$ % increase
It can easily be determined through this Graphic change:
$100 == 18$ % (Up) ==> $118 == 18$ % (Up) ==> $139.24 == 12$ % (down) ==> $122.53 == 18$ % (up) ==> $144.58$ or $145$
So, there is $45$ % rise in production. As initial production was $100$ which becomes $145$ after the cycle of changes in $2008, 2009, 2010$ and $2011$ .

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The annual production in cement industry is subject to business cycles. The production increases for two consecutive years consistently by 18% and decreases by 12 % in the third year. Taking 2008 as the base year, what will be the approximate effect on cement production in 2012 ?

The annual production in cement industry is subject to business cycles. The production increases for two consecutive years consistently by $18$ % and decreases by $12$ % in the third year. Taking $2008$ as the base year, what will be the approximate effect on cement production in $2012$ ?