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1. Refer to the pie-chart and answer the given questions.
Distribution of total number of Dell Laptops Sold by 5 Stores.

Distribution of number of Laptops (both Dell and Lenovo) Sold by 5 Stores in 2011.

Number of Dell laptops sold by store Q is approximately what percent of the number of the number of laptops (both Dell and Lenovo) sold by store R?

A. 28%

B. 45%

C. 50%

D. 38%

Solution:

Percent of Dell Laptops sold by store Q = 25%
Total number of Dell Laptops bold by store Q

\begin{aligned} = 2400 \times \frac{25}{100} \\ = 600 \end{aligned}

Percent of Laptops Dell and Lenovo sold by store R = 35%
Number of Laptops Dell and Lenovo sold by store R

\begin{aligned} = 4500 \times \frac{35}{100} \\ = 1575 \\ ∴ Required Percentage \\ = \frac{600}{1575} \times 100 \\ = 38.095 \\ \approx 38 % \end{aligned}

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