The pie-chart shows the sales of an item on different days of a week.Study the given pie-chart and answer the question that follows.

The difference in angles made at the centre by the sales on Tuesday and Saturday is (in degrees): ​

Correct option is A

Given: 

Sales on Tuesday = 120 

Sales on Saturday = 140 

Solution: 

Difference = 140 - 120 = 20 

Total item sold = 720

Difference (degree) = $$\frac{20}{720}\times360 = 10\degree$$