Let \( h \) represent the number of hot dogs sold and \( p \) represent the number of pretzels sold. We can set up the following equations based on the problem:
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The total number of items (hot dogs and pretzels) is 300: \[ h + p = 300 \]
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The total income from selling hot dogs and pretzels must be $800: \[ 4h + 2p = 800 \]
Now we can solve these equations step by step.
First, let's solve equation (1) for \( p \): \[ p = 300 - h \]
Next, substitute this expression for \( p \) into equation (2): \[ 4h + 2(300 - h) = 800 \]
Expanding the equation gives: \[ 4h + 600 - 2h = 800 \]
Combine like terms: \[ 2h + 600 = 800 \]
Subtract 600 from both sides: \[ 2h = 200 \]
Divide both sides by 2: \[ h = 100 \]
Now use this value of \( h \) to find \( p \): \[ p = 300 - 100 = 200 \]
Thus, the solution is:
- Hot dogs: 100
- Pretzels: 200
So, the boosters need to sell 100 hot dogs and 200 pretzels to reach their goal of $800.