Question

Jimmy has a deck of 60 sport cards of which some are baseball cards in submersible cards Chambers out of card randomly from the the deck record this type and replaces it in the dark Jamie has already recorded three baseball cards and football cards based on this data what is most likely the number of baseball cards in the deck 12 15 24 or 30

Answer 1

My best guess would be 15.  Jamie has already recorded 12 out of 60, which is 1/5.  If we multiply the number of baseball cards recorded, 3, by 5, we get 15.