in a primary school 70% of the boys and 55% of the girls can ride a bicycle. if a boy and a girl are chosen at random what is the probability that both of them can ride a bicycle
To find the probability that both a boy and a girl chosen at random can ride a bicycle, we need to calculate the product of the probabilities that each of them can ride a bicycle.
Given that 70% of boys can ride a bicycle, the probability that a randomly chosen boy can ride a bicycle is 0.70 or 70%. Similarly, as 55% of girls can ride a bicycle, the probability that a randomly chosen girl can ride a bicycle is 0.55 or 55%.
To find the probability that both a boy and a girl chosen at random can ride a bicycle, we multiply these two probabilities:
Probability(boy and girl can ride a bicycle) = Probability(boy can ride a bicycle) * Probability(girl can ride a bicycle)
= 0.70 * 0.55
= 0.385 or 38.5%
Therefore, the probability that both a randomly chosen boy and girl can ride a bicycle is 0.385 or 38.5%.