Direction: 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.
-
The ratio of donors having blood group ‘A’ to the average of the donors having blood group ‘O’, ‘B’ and ‘AB’ is :
-
- 4 : 3
- 4 : 5
- 5 : 4
- 3 : 4
Correct Option: D
As per the given pie chart in question ,
The corresponding angle of having blood group ‘A’ donors = 72°
Sum of the corresponding angle of having blood group 'O’, ‘B’ and ‘AB’ donors = ( 100.8 + 129.6 + 57.6 )°
Required ratio = The corresponding angle of having blood group ‘A’ donors : Average of the corresponding angle of having blood group 'O’, ‘B’ and ‘AB’ donors
| Required ratio = 72° : |  | 100.8 + 129.6 + 57.6 |  | ° | |
| 3 |
| Required ratio = 72° : | = 84 | 3 |
Required ratio = 72° : 96° = 3 : 4
