Hello again mate ,
According to your question,
(1) Answer:- <u>450 parents</u> chose off-grid class (Given)
(2) Answer:-
Well, to find that, Let us add the given numbers, .i.e.,
Total students = 700
Given enrolled students: 450 + 320 + 275
→
(3) Answer:- <u>320 parents</u> (Given)
(4) Answer:- If the parents didn't choose online class, then, add the number of students using off-grid students.
→ <u>450 parents</u>.
(5) If parents didn't opt for off-grid, then add the online students.
→ <u>320 </u><u>students.</u>
<em>By </em><em>Benjemin</em> ✍️
