Question

in one exam three groups of 40 aur 50 student and 60 students participated and the passing percentage in that was 90% and 80 then how many percent of all those groups passed​

Answer 1

Step-by-step explanation:

total students=80

failed students=16

total passed students=80–16=64

passed students in english=40

passed students in hindi=24

passed students in either english or hindi =64

passed in both english and hindi=total passed students-passed students in english ,hindi

so,passed in both english and hindi=64–64=0

the ans: 0

Answer 2

Answer:

12

Step-by-step explanation:

Exam three groups of 40,50,60.

Percentage 90%.

80 how group passed.

40_50_60.

40÷50=20 ,25.

20 ÷25=5.

60÷5 =12.

=12