Problemas
The cost of a customer's electricity bill is based on the number of units of electricity the customer uses. - For the first 25 units of electricity.the cost is 5 per unit. - For units of electricity after the first 25, the cost is 7 per unit. Which of the following code segments correctly sets the value of the variable cost to the cost, in dollars. of using numunits units of electricity?
Solución
Daliaprofessionell · Tutor durante 6 años
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4.5 (182 votos)
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To determine the correct code segment that sets the value of the variable `cost` to the cost of using `numunits` units of electricity, we need to consider the pricing structure provided:<br /><br />- For the first 25 units, the cost is $5 per unit.<br />- For units after the first 25, the cost is $7 per unit.<br /><br />Let's break down the cost calculation based on the number of units used:<br /><br />1. If `numunits` is less than or equal to 25, the cost is simply `numunits * 5`.<br />2. If `numunits` is greater than 25, the cost is calculated as follows:<br /> - The cost for the first 25 units is `25 * 5`.<br /> - The cost for the remaining units (i.e., `numunits - 25`) is `(numunits - 25) * 7`.<br /><br />Now, let's write the code segment that correctly calculates the cost based on these rules:<br /><br />```python<br />if numunits <= 25:<br /> cost = numunits * 5<br />else:<br /> cost = (25 * 5) + ((numunits - 25) * 7)<br />```<br /><br />This code segment checks if `numunits` is less than or equal to 25. If it is, it sets `cost` to `numunits * 5`. Otherwise, it sets `cost` to the sum of the cost for the first 25 units and the cost for the remaining units.<br /><br />Here is the complete code segment in Python:<br /><br />```python<br />numunits = 30 # Example value for numunits<br /><br />if numunits <= 25:<br /> cost = numunits * 5<br />else:<br /> cost = (25 * 5) + ((numunits - 25) * 7)<br /><br />print("The cost is:", cost)<br />```<br /><br />This code will correctly calculate the cost based on the given pricing structure.
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