Total marks of the 23 students = 23 * 75 = 1725
Total marks of that two students = 93 + 78 = 171
So, remaining marks will be: 1725 - 171 = 1554
Their average would be: 1554 / 21 = 74%
So, your final answer is 74%
Hope this helps!
-- 100% of the original number is ALL of it.
-- If it's increased by that amount, it becomes DOUBLE
(twice as much as) what it was originally.
