Question

Ill give 100 points for a correct answer pls

Answer 1

Each booster pack has 9 cards, and each premade deck has 37 cards

Explanation:

9 booster packs and 7 premade decks = 340 cards

4 booster packs and 1 premade deck = 73 cards

Multiply the bottom one by 7 to make the premade decks the same amount

9 booster packs and 7 premade decks = 340 cards

28 booster packs and 7 premade decks = 511 cards

511 - 340 = 171

28 - 9 = 19

19 booster packs is worth 171 cards

171 / 19 = 9

1 booster pack is worth 9 cards

So

9(cards) x 9(packs) = 81 cards

340 - 81 = 259 cards (in 7 premade decks)

259 / 7 = 37

1 premade deck is worth 37 cards

Answer 2

booster pack has 9 and premade deck has 37