Johnny is a nine year old boy.  On one hot summer day, Johnny is outside his house playing with his dog.  He is very hot and wants to have some ice cream.  He looks in his freezer and sees that he does not have ice cream.  Johnny then hears the song of the ice cream truck.  Johnny runs outside but does not see the ice cream truck.  He looks down the street but the ice cream truck is nowhere to be found.  The music of the truck starts to get softer and then louder.  Johnny waits outside for an hour.  Johnny then thinks that he needs money when the ice cream truck comes. He runs inside and finds five dollars in his room.  He then hears the ice cream truck song get very loud.  He runs back outside and sees the truck pass his house.  Johnny runs after the truck and catches up with it. Johnny buys 4 ice cream pops and some candy.  He gives his five dollars to the ice cream man and gets one dollar back.  He walks home and happily eats all of his candy and ice cream. How old is Johnny?
nine eight four seven