Find the approximate percentage of aggregate marks scored by Ramesh, who obtained 50%, 60% and 70 % marks in three examinations with maximum marks 100, 130 and 150 respectively.

Correct option is A

Given:
Ramesh obtained 50% marks in an exam with maximum marks 100.
Ramesh obtained 60% marks in an exam with maximum marks 130.
Ramesh obtained 70% marks in an exam with maximum marks 150.
Concept Used:

$$\text{Percentage Calculation} = \left( \frac{\text{Marks Obtained}}{\text{Maximum Marks}} \right) \times 100$$​​

$$\text{Aggregate Percentage} = \left( \frac{\text{Total Marks Obtained}}{\text{Total Maximum Marks}} \right) \times 100$$​​

Solution:

Exam 1: 50% of 100 = $$\frac{50}{100}\times$$​100 = 50 marks

Exam 2: 60% of 130 = $$\frac{60}{100}\times$$​130 = 78 marks

Exam 3: 70% of 150 =$$\frac{70}{100}\times$$​ 150 = 105 marks
Total marks = 50 + 78 + 105 = 233 marks
Total maximum marks = 100 + 130 + 150 = 380 marks
Aggregate percentage = $$\frac{233}{380} \times$$​100 ≈ 61.32%
Therefore, the approximate percentage of aggregate marks scored by Ramesh is 61.32%.