To find the cost of 25 kg of apples, we first need to determine the cost per kilogram of apples.
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Calculate the cost per kilogram: \[ \text{Cost per kg} = \frac{\text{Total cost}}{\text{Total weight}} = \frac{262.50}{15} = 17.50 \text{ per kg} \]
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Now, calculate the cost of 25 kg: \[ \text{Cost for 25 kg} = \text{Cost per kg} \times \text{Weight} = 17.50 \times 25 \]
Now, compute \( 17.50 \times 25 \): \[ 17.50 \times 25 = 437.50 \]
Therefore, the cost of 25 kg of apples is $437.50.