In an examination of 200 students 10%failed in both subjects.if 60%passed in mathematics and 50%in science.find no.of students who passed In mathematics only.no.2.no.of students who passed in both subjects.3no.of students who passed in science only
Answers
Step-by-step explanation:
Percentage failed in both subjects= 20%
Percentage of students failed in Science= 100–60=40%
Percentage of students failed only in science= 40–20=20%
Percentage of students failed in maths= 100–70= 30%
Percentage of students failed only in maths= 30–20= 10%
Students passed in both subjects= 100-(20+20+10)
=100- 50=50%
50% of total= 2500
let total no. of students be x,
50x/100= 2500
x=5000
Therefore, 5000 students appeared for the examination.
Answer:
In an examination, 60% of the students passed in maths and 70% of the students passed in science, but 20% failed in both of these subjects. If 2500 students passed in both the subjects what the number of students who appeared at the examination?
Percentage failed in both subjects= 20%
Percentage of students failed in Science= 100–60=40%
Percentage of students failed only in science= 40–20=20%
Percentage of students failed in maths= 100–70= 30%
Percentage of students failed only in maths= 30–20= 10%
Students passed in both subjects= 100-(20+20+10)
=100- 50=50%
50% of total= 2500
let total no. of students be x,
50x/100= 2500
x=5000
Therefore, 5000 students appeared for the examination.