If 96% of Chinese couples have one child (which is female 50% of the time), and the remaining 4% of Chinese couples engage in sex-selective abortion until they have a male child, what is the ratio of females per 100 males among the children (to the nearest whole number)?

The 96% who do not select will contribute 48% of the females and 48% of the males. The 4% who do select will contribute all males, so 52% will be males and 48% females.

That means 48 females per 52 males or 92.3 females per 100 males.
(You get that by solving 48/52 = x/100)
Per nearest whole number, that is 92 females.

thanks a lot

48

To find the ratio of females per 100 males among the children, we need to calculate the number of females and males among the children separately and then express this ratio as a percentage.

Let's assume that there are 100 couples for ease of calculation. Of these, 96% have one child, and 4% continue to have children until they have a male child.

Among the 96 couples who have one child, 50% of them have a female child. So, out of these 96 children, approximately 48 (96 * 0.5) are female.

For the remaining 4 couples who continue to have children until they have a male child, we can assume that they keep having one child until they have a male child. So, there will be a total of 4 male children.

Therefore, the total number of female children is 48, and the total number of male children is 4.

To find the ratio of females per 100 males, we can express this as a percentage. The percentage of females is (48 / 52) * 100 = 92.3077%.

Therefore, to the nearest whole number, the ratio of females per 100 males among the children is approximately 92 females per 100 males.