Question

Jamie has a deck of 60 sports cards, of which some are baseball cards and some are football cards. Jamie pulls out a card randomly from the deck, records its type, and replaces it in the deck. Jamie has already recorded three baseball cards and nine football cards. Based on these data, what is, most likely, the number of baseball cards in the deck?

Answer 1

12
15
24
30

Answer 2

We need to set up a proportion:
\[\frac{baseball\ cards\ sample}{cards\ sample} = \frac{total\ baseball\ cards}{total\ cards\ deck}\]

Answer 3

ok

Answer 4

bc/60

Answer 5

Can you set up the numbers for that?
Use the variable B for the total number of baseball cards.

Answer 6

60 = b

Answer 7

no wait

Answer 8

thats the TOTAL AMOUNT