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This question belongs to Data Interpretation Pie Chart
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Directions (1 - 4): This is a pie chart for the data on A, B, O, AB blood groups of 150 donors. Observe the pie chart and answer the questions.
Direction image of Pie Chart chapter
Pie Chart
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The ratio of donors blood group ‘A’ to the average of the donors group ‘O’, ‘B’ and ‘AB’ is:

Answer & Solution
Correct Answer: Option D
Average of O, B, AB blood group
$$\eqalign{ & = \frac{100.8° + 129.6° + 57.6°}{3} \cr & = \frac{288°}{3} \cr & = 96° \cr & \therefore \text{Required ratio} \cr & = 72° : 96° \cr & = 3 : 4 \cr} $$
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