7 . 3
--- × ------
10. . 6
= 21
--------
60
= 7/20
Answer:
120:200
Step-by-step explanation:
3/8*320= 120
320-120=200
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

