The average mark of a student in 4 subjects is 75. If the student obtained 80 marks in the fifth subject, then the new average is?
Note
The sum of marks in 4 subjects = 75 × 4 = 300.
The sum of marks in 5 subjects = 300 + 80 = 380.
∴ New average = 380/5 = 76.
The average mark of a student in 4 subjects is 75. If the student obtained 80 marks in the fifth subject, then the new average is 76.