1.

Out of total students 100/3 % are in hostel A and remaining are in hostel B. If 20 students from hostel B are shifted to hostel A, then total students in hostel A becomes 50% of total students. If 20 students from hostel A are shifted to hostel B, then the total students in hostel A becomes what per cent of total students?1. 11.11%2. 16.67%3. 12.50%4. 8.33%

Answer» Correct Answer - Option 2 : 16.67%
Let total students = N
 
students in hostel A = 33 1 % of N = N
33
 
students in hostel B = N – 100N = 2N
33

According to question-
⇒ N + 20 = N
32
 
⇒ 20 = N
6

⇒ N = 120

Now, if 20 students from hostel A are shifted to hostel B-
⇒ N – 20   
3 × 100 = 20 × 100 = 16.67%
 N120

Hence, option 2 is correct.


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