Ans: B
A may be false. It is because we do not know the actual amount of the expenditure of Albert and Betty. The size of the pie chart do not mean anything.
A may be false. It is because we do not know the actual amount of the expenditure of Albert and Betty. The size of the pie chart do not mean anything.
B must be true. It is because the two angles at centre of two pie chart are the same.
C may be false. Even the two percentages are the same, but we do not know the total amount of the expenditure of Albert and Betty. Therefore the expenditure on rent of Albert and Betty may be different.
D may be false. It is because we do not know the actual amount of the expenditure of Albert and Betty. Then we cannot know the actual amount of the expenditure on food of Albert and Betty.
