Objective: Average Marks Calculation

The question asks for the average marks obtained by all six students (A-F) in subject S5 and subject S6 separately. We need to sum the marks for each subject and divide by the number of students (6).

Calculating Average Marks for Subject S5

First, identify the marks scored by each student in subject S5:

• Student A: 154
• Student B: 136
• Student C: 144
• Student D: 104
• Student E: 174
• Student F: 164

Sum these marks:

$ \text{Sum}_{S5} = 154 + 136 + 144 + 104 + 174 + 164 = 876 $

Calculate the average marks for S5:

$ \text{Average}_{S5} = \frac{\text{Sum}_{S5}}{\text{Number of Students}} = \frac{876}{6} = 146 $

Calculating Average Marks for Subject S6

Next, identify the marks scored by each student in subject S6:

• Student A: 150
• Student B: 132
• Student C: 160
• Student D: 168
• Student E: 70
• Student F: 100

Sum these marks:

$ \text{Sum}_{S6} = 150 + 132 + 160 + 168 + 70 + 100 = 780 $

Calculate the average marks for S6:

$ \text{Average}_{S6} = \frac{\text{Sum}_{S6}}{\text{Number of Students}} = \frac{780}{6} = 130 $

Final Answer: Average Marks

The average marks scored by all students in subject S5 is 146, and in subject S6 is 130.

Therefore, the average marks scored by all the students in the subjects S5 and subject S6 are 146 and 130, respectively.