To calculate the percentage of marks of 6 subjects out of 80, follow these steps:

1. Add the marks obtained in all six subjects. Let’s say the total marks obtained is 360.

2. Calculate the total maximum marks. Since each subject is out of 80, the total maximum marks for all six subjects will be 80 x 6 = 480.

3. Calculate the percentage by dividing the total marks obtained by the total maximum marks and multiplying by 100. In this case, the percentage would be:

(360/480) x 100 = 75%

Therefore, the percentage of marks obtained in 6 subjects out of 80 is 75%.

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