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What is the approximate percentage decrease in the number of boys in School D in the year 2008 as compared to that in the previous year ?
Answer & Solution
Correct Answer:
Option
A
Number of boys in School D in 2007
= 6.4 × 100
= 640
Number of boys in School D in 2008
= 5.3 ×100
= 530
$$\eqalign{ & \text{Decrease }\% \cr & = \left(\frac{110}{640}\times100\right)\% \cr & = \frac{275}{16}\% \cr & = 17.1\% \cr & \approx 17\% \cr} $$
= 6.4 × 100
= 640
Number of boys in School D in 2008
= 5.3 ×100
= 530
$$\eqalign{ & \text{Decrease }\% \cr & = \left(\frac{110}{640}\times100\right)\% \cr & = \frac{275}{16}\% \cr & = 17.1\% \cr & \approx 17\% \cr} $$
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