The following pie chart shows the different colored dresses worn by 120 students in a college party.  Study the pie chart and answer the question that follows. The difference between no. of students who wore Grey and yellow colored dress is?

10 11 12 14

12

Number of students who wore grey = 120 × 20% = 24 Number of students who wore yellow = 120 × 10% = 12 Difference = 24 - 12 = 12