Question : The following bar graph shows the number of girls in a school over 5 years.
Find the percentage decrease in the number of girls from the year 2012 to the year 2013.
Option 1: 50%
Option 2: 40%
Option 3: 20%
Option 4: 30%
Correct Answer: 50%
Solution :
According to the question,
Initial Value (2012) = 28
Final Value (2013) = 14
$\therefore$ Percentage Decrease $=\frac{\text{ Initial Value – Final Value}}{\text{ Initial Value }} × 100 = \frac{ 28 – 14}{ 28} ×100 = \frac{ 14}{ 28}×100 = 50\%$
Hence, the correct answer is 50%.
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