The following graph shows the performance in aggregate marks of 2 board examinations of a group of friends. On the basis of the graph, identify the girl who has shown the maximum improvement from class X to class XII.

Alka

Lets solve one by one for each option.

1. Madhu

Percentage of aggregate marks in class X = 76

Percentage of aggregate marks in class XII = 86

Improvement = 86 - 76 = 10

2. Alka

Percentage of aggregate marks in class X = 72

Percentage of aggregate marks in class XII = 86

Improvement = 86 - 72 = 14 

3. Veena

Percentage of aggregate marks in class X = 85

Percentage of aggregate marks in class XII = 90

Improvement = 90 - 85 = 5

4. Meena

Percentage of aggregate marks in class X = 62

Percentage of aggregate marks in class XII = 71

Improvement = 71 - 62 = 9 

So , Maximum improvement is in case of Alka i.e. 14 .

Ans :- Alka