Question

In an examination, 40% students passed in Maths only, 30% passed in Science only and 10%

students failed in both the subjects. If 400 students passed in Science, find the total number of
students by drawing a Venn diagram.




help me ​

Answer 1

The total number of students is 800.

Explanation:

Given that in an examination, 40% students passed in Maths only, 30% passed in Science only and 10% students failed in both the subjects, to determine the total number of students if 400 students passed in Science the following calculation must be performed:

100 - 40 - 30 - 10 = 20

20 + 30 = 50

50 = 400

100 = X

100 x 400/50 = X

800 = X

Thus, the total number of students is 800.