First, add the amount of red and green stickers to determine the total amount of stickers:
3752 + 3136 = 6888
Next, subtract the amount he sold to Joe:
6888 - 1800 = 5088
Finally, divide by 48 to determine how many stickers are in each packet:
5088 / 48 = 106
There are 106 stickers in each packet.