The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a book. Study the pie-chart and answer the questions based on it. What is the central angle of the sector corresponding to the expenditure incurred on binding?

The following pie-chart shows the percentage distribution of the expen

1.	The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a book. Study the pie-chart and answer the questions based on it. What is the central angle of the sector corresponding to the expenditure incurred on binding?
A.	72∘
B.	90∘
C.	48∘
D.	70∘
Answer» B. 90∘