Question

in a class of boys and girls an students is chosen random if the property that a boy in chosen is 2 by 3 of the probability that a girl is chosen the ratio of the number of boys to the total number of students in the class is ​

Answer 1

Answer:

The probability that a girl is chosen is 1-2/3

=1/3

The ratio of no. of boys to total no. of students in the class is 2:3

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Answer 2

We know that total probability = 1

Given

Probability that a girl choosen be X

So the probability of a girl choosen = 2x/3

ACCORDING to questions

X+2x/3 = 1

5x= 3

X = 0.6 (Probability that a girl choosen)

Now

probability of a boy choosen= 1.2/3 = 0.4

Now

ratio of

total number of boy to the total number of students

= 0.4/1 = 4/10 = 2/5 = 2:5