Question

There are 30% girls in a class and in that 30% stay in hostels. The percentage of girls in the class who are in the hostel is
(A) 90%
(B) 60%
(C) 15%
(D) 9%

Answer 1

Answer:

B

Explanation:

60% of girls are staying in hostels

Answer 2

The percentage of girls in the class who are in the hostel is  Option (D) 9%

Explanation:

Let us assume that the number of students in class is 100

Given that

Girls ratio in the class = 30%

So, the girls in the class = 100 × 30% = 30

Out of which 30% of girls are staying in hostels

So, the number of girls staying in hostel is

= 30 × 30%

= 9

Now the percentage of girls who are in hostel is

= Number of girls staying in hostel ÷ Total number of students in a class

= 9 ÷ 100

= 9%

Learn more

Out of 42 students in a class 30 students stay in hostel find the percentage of the students staying in hostel

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