in the 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

Answer 1

To find the probability that both a boy and a girl chosen at random can ride a bicycle, we need to multiply the probability of a boy being able to ride a bicycle by the probability of a girl being able to ride a bicycle.

In this case, the probability that a boy can ride a bicycle is 70% or 0.70, and the probability that a girl can ride a bicycle is 55% or 0.55.

Therefore, the probability that both a boy and a girl chosen at random can ride a bicycle is 0.70 * 0.55 = 0.385 or 38.5%.