What is the difference between the number of laptops (both Dell and Lenovo) sold by store B and the total number of Lenovo laptops sold by stores C and D together?

Solution

Converting the pie chart into tabular format :

Number of laptops (both Dell and Lenovo) sold by store B = 1035

Total number of Lenovo laptops sold by stores C and D together = (1575 - 720) + (495 - 216)

= 855 + 279 = 1134

=> Required difference = 1134 - 1035 = 99

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