In primary school,70% of the boys and 55%of the girls can ride a bicycle.if the boy and girl are chosen at random what is the probability that both of them can ride a bicycle

Answer 1

Let A be the event that a boy can ride a bicycle and B be the event that a girl can ride a bicycle. Then,

P(A) = 0.7 (given)
P(B) = 0.55 (given)

We need to find P(A and B), the probability that both a boy and a girl can ride a bicycle. Since they are chosen at random, we can assume that the events A and B are independent. Therefore,

P(A and B) = P(A) x P(B)
= 0.7 x 0.55
= 0.385

Therefore, the probability that both a boy and a girl chosen at random from the primary school can ride a bicycle is 0.385 or 38.5%.