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?

12
15
24
30

Answer 1

is 24 correct?

Answer 2

30

Answer 3

um...explanation plz

Answer 4

@agent0smith could u help?

Answer 5

it has to be a 50 50 chance

Answer 6

could u tell me how u got 30

Answer 7

60/2

Answer 8

is 30

Answer 9

...thats not how u do it....

Answer 10

but thx for trying :/

Answer 11

Jamie has already recorded three baseball cards and nine football cards.

prob of baseball = 3/12 = 1/4

Multiply that by the total number of cards

Answer 12

?

Answer 13

its 15 because for every 12 cards 3 are baseball cards and 12 goes into 60 5 times

Answer 14

are u sooo sure its 15 cuz i rlly need to get this right

Answer 15

yes

Answer 16

am I right?

Answer 17

o w8 its is 15!

Answer 18

thx guys!

Answer 19

" Jamie has already recorded three baseball cards and nine football cards.

prob of baseball = 3/12 = 1/4

Multiply that by the total number of cards "

What do you need help understanding here?