Question

There is a school were 60% are girls and 35% of the girls are poor. Students are selected at random, what is the probability of selecting a poor girl out of total strength

Answer 1

let the num of students be 100
therefore there are 60 girls
out of which 35*60/100 = 21 girls are poor
therefore probability of selecting a poor girl is = 21/60 =0.35

Answer 2

Answer:

0.35 is the probability of selecting a poor girl out of total strength.

Step-by-step explanation:

Now, let us consider the total strength of the students present in the school as 100.

The total number of girl students = 60%

From the given question, out of the total percentage of girl students of 60%, the percentage of poor girl students are 35% = 35/100 x 60/100

                       = 0.21

                       = 0.21 x 100

                       = 21  

Probability = No. of poor girl students/the total number of girl students

    = 21/60

    = 0.35