Jerry had some action figures on a shelf in his room. Later he added 7 more action figures to the shelf. If there are a total of 10 action figures on his shelf now how many action figures did he have initially on the shelf?

First, we need to find out how many action figures the store had in total. We know that the store had 24 action figures in total, and that 8 of them were sold. This means that there were 16 action figures left in the store. 

Next, we need to find out how many action figures the boy had on his shelf. We know that the boy had 4 action figures on his shelf, and that he bought 3 action figures. This means that he had 1 action figure on his shelf originally.