The pie chart given below shows the number of laptops sold of each of 7 different brands in a year as percentages of the total number of laptops sold of all these 7 brands taken together in that year.

What is the difference between the measures of the central angles made by sector B2 and sector B5?

14.4°

Difference b/w Central angle made by B2 & B5 = \(\frac{22-18 }{100}\) × 360º

= \(\frac{1 }{25}\) × 360º

= 14.4º