Answer:3
Step-by-step explanation:
Given
There are total 40 students in a class
No of students with Pierced Nose n(N)=7
No of students with Pierced ear n(E)=36
and we know using sets

where
Students either nose or ear Pierced
no of students having both nose and ear pierced


<span>Calculate how many pieces of fruit go into each bag. Add this to the number of students going on the trip.</span>
Answer:
she must 1st save money for her to earn the 7%