Question : The following pie chart shows the monthly sales of laptops of five companies A, B, C, D, and E in a store.
If the store sold 2500 laptops in a month, then what is the difference between the number of laptops sold by Company A and that of Company C?
Option 1: 750
Option 2: 650
Option 3: 800
Option 4: 700
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Correct Answer: 800
Solution :
Number of laptops sold by the store in a month = 2500
Laptop sold by company A = 40% of 2500 = $\frac{2500\times{40}}{100}$ = 1000
Laptop sold by company C = 8% of 2500 = $\frac{2500\times{8}}{100}$ = 200
$\therefore$ The difference between the number of laptops sold by Company A and that of Company C = 1000 – 200 = 800 laptops.
Hence, the correct answer is 800.
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