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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 T is what percent more than the number of laptops sold by store P?

A. 30%

B. 45%

C. 40%

D. 42.5%

Solution:

Number of Dell laptops sold by store T

\begin{aligned} = 2400 \times \frac{21}{100} \\ = 504 \end{aligned}

Number of Laptops sold by store P

\begin{aligned} = 2400 \times \frac{15}{100} \\ = 360 \end{aligned}

Required Percentage

\begin{aligned} = \frac{504 - 360}{360} \times 100 \\ = 40 % \end{aligned}

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