Boxplots: Five-number summary

The 5 number summary statistics for the number of years a typical family owns their first home before selling it is given by:
0.5      1      3.5      10      300.5\ \ \ \ \ \ 1\ \ \ \ \ \ 3.5\ \ \ \ \ \ 10\ \ \ \ \ \ 30
A total of 120 families participated in this study.

How many of the families kept their home more than 10 years before selling it?
More Boxplots and Five-Number Summary Questions: