Question

In a class of 600 students, 55% students passed in Geography, 65% students passed in Economics and 30% students passed in both these subjects. How many students failed in these two subjects?
1. 70
2. 60
3. 45
4. 50

Answer 1

Correct Answer - Option 2 : 60

Given:

Total number of student is 600.

55% students passed in Geography.

65% students passed in Economics.

30% students passed in both these subjects.

Formula Used:

Failed % = 100 - (Passed % in geography + Passed % in economics - Passed % in both subject)

Calculation:

Failed % = 100 - (55 + 65 - 30) = 10%

The number of failed student = 10/100 × 600 = 60

∴ The number of failed student is 60.