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Answer 1 · 2016-12-16T05:56:02

The number of children living in Livingston is $900$ and the total number of people living in Livingston is $4,800$ .

The ratio of women to children is $7:3$ . Since the number of women is $2,100$ , the number of children $(x)$ will be:

$x=2100xx3/7$

$x=300cancel2100xx3/(1cancel7)$

$x=300xx3$

$x=900$

The ratio of men to women is $6:7$ . Since the number of women is $2,100$ , the number of men $(y)$ will be:

$y=2100xx6/7$

$y=300cancel2100xx6/(1cancel7)$

$y=300xx6$

$y=1800$

The total number of people is $1,800+2,100+900=4,800$ .