I want to know how to calculate my aggregate percentage for marks obtained out of 90 in 7 subjects . my marks are - 74/90 80/90 80/90 73/90 82/90 81/90 79/90?
74/90 = X/100
90X = 7400
X = 82.2
======Your actual percentage and this should give you an idea on getting your aggregate percentage. This is common for tests not being X/100.
Take the average of the marks you obtained, and then multiply with 100 and divide it by 90. You'll get the percentage.