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.; 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 us assume that 60 is the class strength and 35 areally poor girls

P (e)=no.of outcomes÷ total no.of outcomes

P (e)=60÷35=1/2

Answer 2

Let the total strength be 100.

Then number of girls in it =

60% of 100 = 60 girls

Then out of 60 girls 35% are poor

therefore, poor girls = 35% of 60

= 21

therefore, probability of poor girls from total strength = 21 /100

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