There are 2 families walking down the street. The Brown family has 4 members, the Smith family has 6 members. The Brown family finds a pile of pennies on the street. They divide the pennies evenly and each person gets 5 pennies. The Smith family finds another pile of pennies on the street. They divide their pennies up evenly and each member of their family gets 3 pennies. What is the average number of pennies each person gets?