Question

Given pie-charts show sales of mobile phones in different years.

The sale of nokia mobile phones in 2019 becomes of its sale in 2016.

• A. $\frac{3}{2}$
• B. $\frac{3}{4}$
• C. $\frac{4}{3}$

Answer 1

The correct option is B $\frac{3}{4}$

Sale of mobile phones is proportional to area or central angle covered by it in pie-chart.

According to data obtained in 2016 from pie-chart the central angle covered by nokia mobile phones is ${60}^{\circ }$
and data obtained in 2019 from pie-chart the central angle covered is ${45}^{\circ }$.

Therefore,

$\frac{Saleofnokiamobilephonesin2016}{Saleofnokiamobilephonesin2019}=\frac{{60}^{\circ }}{{45}^{\circ }}=\frac{4}{3}$

(or)

$\frac{Saleofnokiamobilephonesin2019}{Saleofnokiamobilephonesin2016}=\frac{3}{4}$

$\Rightarrow$ The sale of nokia mobile phones in 2019 becomes $\frac{3}{4}$ of its sale in 2016.