Question

A census has revealed that 7 out of every 10 families in a certain city have school-aged children living at home. If there are 4,500 families living in this city, how many families with school-aged children living at home are in the city?

A) 643
B) 700
C) 1,350
D) 3,150
E) 4,500

Answer 1

There are 3,150 families with school-aged children living at home in the city, calculated by taking 7/10 of the total 4,500 families.

Step-by-step explanation:

If 7 out of every 10 families in a certain city have school-aged children living at home, and there are 4,500 families in the city, we can calculate the number of families with school-aged children by finding 7/10 of 4,500.

First, we divide 4,500 by 10 to find out what 1/10 of the families would be:

4,500 / 10 = 450

Now, we multiply this figure by 7 to find out what 7/10 of the families would be:

450 * 7 = 3,150

Therefore, there are 3,150 families with school-aged children living at home in the city. The correct answer is D) 3,150.