The average marks of a student in 4 subjects is 75. If the student obtained 80 marks in the fifth subject, then the new average is (a) 72.5    (b) 76    (c) 77    (d) 77.5

Marks of a student in four subjects are 90 ,85 ,80 and 75 .How much he should score in the fifth subject to have an average of 80 ?

The average marks of 10 students is 30 if 6 marks is added with each students' marks.Then find the new average.

The average marks of a student in 8 subjects is 87. Of these,the highest marks are 2 more than the one next in value.If these two subjects are eliminated,the average marks of the remaining subjects is 85.What are the highest marks now obtained by him? (a) 89 (b) 91quad (c) 94 (d) 96

The ratio of marks obtained by a student in 3 subject was 1:2:3 . The teacher decided to allow grace marks of 5% for each subject. Find the student' s new ratio.

In a class of 100 whose average maverage marks oflass of 100 students there are 70 boysaverage marks in a subject are 75. If themarks of the complete class is 72, thenwhat is the average of the girls? (a) 73 (b) 65 (c) 68 (d) 74

The table given below shows the marks obtained by 6 students in 3 subjects. What are the average marks per subject scored by D?