Chapter 6 - Percent - 6.5 Using the Percent Equation - 6.5 Exercises - Page 430: 56

$1872$ families

We see from the pie chart that $24\%$ (0.24) of families used a child care center or nursery school. We can find out the number of families that this corresponds to using percents and the fact that there were 7800 families total: $0.24*7800=1872$ families