In an examination, there are three subjects of 100 marks each. A student scores 75% in the first subject and 86% in the second subject. He scored 68% in aggregate. His percentage of marks in the third subject is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 43%.
A student scores 75% in the first subject and 86% in the second subject
He scored 68% in aggregate
The sum of all three subjects = 68 × 3 = 204
Now,
Marks in first subject + Marks in second subject + Marks in third subject = 204
75 + 86 + Marks in third subject = 204
Marks in third subject = 204 - 164 = 43
Hence, Marks in third subject = 43%