In a primary school 70 percent of the boys and 55 percent of the girls can ride bicycle.If a boy and a girl are chosen at a random what is the probability
A. That both of them can ride a bicycle
B. That neither of them can ride a bicycle?
A. To find the probability that both of them can ride a bicycle, we first find the probability that the boy can ride a bicycle and the girl can ride a bicycle.
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.
So the probability that both of them can ride a bicycle is:
0.70 * 0.55 = 0.385 or 38.5%
B. To find the probability that neither of them can ride a bicycle, we first find the probability that the boy cannot ride a bicycle and the girl cannot ride a bicycle.
The probability that a boy cannot ride a bicycle is 30% or 0.30, and the probability that a girl cannot ride a bicycle is 45% or 0.45.
So the probability that neither of them can ride a bicycle is:
0.30 * 0.45 = 0.135 or 13.5%