To determine which paver is the best buy, we need to calculate the total cost for each type of paver based on the relationships given. Let's assume the number of Paver 2 needed is \( x \).
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Paver 2:
- Cost: $2.50 each
- Quantity needed: \( x \)
- Total cost for Paver 2: \( 2.50x \)
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Paver 1:
- Cost: $1.49 each
- Quantity needed: \( 2x \) (twice as many as Paver 2)
- Total cost for Paver 1: \( 1.49(2x) = 2.98x \)
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Paver 3:
- Cost: $0.75 each
- Quantity needed: \( x/2 \) (half as many as Paver 2)
- Total cost for Paver 3: \( 0.75(x/2) = 0.375x \)
Now, let's compare the total costs of each paver:
- Total cost for Paver 1: \( 2.98x \)
- Total cost for Paver 2: \( 2.50x \)
- Total cost for Paver 3: \( 0.375x \)
To find the best buy, we can compare these total costs directly (without needing the value of \( x \) since it will cancel out):
- For Paver 1: \( 2.98x \)
- For Paver 2: \( 2.50x \)
- For Paver 3: \( 0.375x \)
Clearly, \( 0.375 < 2.50 < 2.98 \).
Therefore, the best buy is Paver 3.
Final Answer: 3