In a class of 100 students, 70 students passed in Chemistry, 50 studen

1.	In a class of 100 students, 70 students passed in Chemistry, 50 students passed in Physics and 10 students failed in both Physics and chemistry, then find the number of students passed in Both the subjects Physics and chemistry?1. 102. 203. 304. 40
Answer» Correct Answer - Option 3 : 30 Given: Number of students in the class = 100 Number of students passed in Chemistry = 70 Number of students passed in Physics = 50 Number of students failed in both Physics and Chemistry = 10 Calculation: Let the number of students passed in both the subjects Physics and Chemistry be S Total Students = Number of students passed in Chemistry + Number of students passed in Physics + Number of students failed in both Physics and Chemistry – Number of students passed in both the subjects Physics and Chemistry 100 = 70 + 50 + 10 – S ⇒ S = 130 – 100 ⇒ S = 30 ∴ The number of students passed in Both the subjects Physics and chemistry are 30

In a class of 100 students, 70 students passed in Chemistry, 50 students passed in Physics and 10 students failed in both Physics and chemistry, then find the number of students passed in Both the subjects Physics and chemistry?1. 102. 203. 304. 40

Answer» Correct Answer - Option 3 : 30

Given:

Number of students in the class = 100

Number of students passed in Chemistry = 70

Number of students passed in Physics = 50

Number of students failed in both Physics and Chemistry = 10

Calculation:

Let the number of students passed in both the subjects Physics and Chemistry be S

Total Students = Number of students passed in Chemistry + Number of students passed in Physics + Number of students failed in both Physics and Chemistry – Number of students passed in both the subjects Physics and Chemistry

100 = 70 + 50 + 10 – S

⇒ S = 130 – 100

⇒ S = 30

∴ The number of students passed in Both the subjects Physics and chemistry are 30

Discussion

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