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In a certain card game, for every 4 blue cards, there are 3 yellow cards. There are a total of 84 blue and yellow cards in the game.
How many blue cards are in the game?
blue cards

In a certain card game, for every 44 blue cards, there are 33 yellow cards. There are a total of 8484 blue and yellow cards in the game.\newlineHow many blue cards are in the game?\newlineblue cards

Full solution

Q. In a certain card game, for every 44 blue cards, there are 33 yellow cards. There are a total of 8484 blue and yellow cards in the game.\newlineHow many blue cards are in the game?\newlineblue cards
  1. Understand ratio and total: Understand the ratio and total number of cards.\newlineWe are given that for every 44 blue cards, there are 33 yellow cards. This means the ratio of blue cards to yellow cards is 4:34:3. We also know that there are a total of 8484 blue and yellow cards combined.
  2. Set up equation: Set up the equation based on the ratio.\newlineLet the number of sets of cards (where each set consists of 44 blue cards and 33 yellow cards) be xx. Therefore, the total number of blue cards is 4x4x and the total number of yellow cards is 3x3x. The sum of blue and yellow cards is 4x+3x4x + 3x, which equals 8484.
  3. Combine terms and solve: Combine like terms and solve for xx.4x+3x=844x + 3x = 847x=847x = 84Now, divide both sides by 77 to find xx.x=847x = \frac{84}{7}x=12x = 12
  4. Calculate number of blue: Calculate the number of blue cards.\newlineSince xx represents the number of sets and there are 44 blue cards in each set, we multiply the number of sets by 44 to find the total number of blue cards.\newlineNumber of blue cards = 4x4x\newlineNumber of blue cards = 4×124 \times 12\newlineNumber of blue cards = 4848