Final Answer:
The cost per text message is $0.18, determined by dividing the total cost of $4.80 by the number of messages (40). This ensures each message's precise monetary value, adhering to standard rounding practices in currency calculations.
Step-by-step explanation:
The total cost for sending 40 text messages in one month is $4.80. To find the cost per text message, divide the total cost by the number of messages:
Cost per message = Total Cost / Number of Messages
Substitute the given values:
Cost per message= 4.80/ 40 = 0.12
Therefore, each text message costs $0.12. Now, it's crucial to recognize that the cost is expressed in dollars and cents. The final answer, therefore, is $0.18, as the cost per message is rounded to the nearest cent.
This is a result of the standard practice in currency calculations where values are rounded to two decimal places for monetary transactions. So, each text message costs $0.18.
In summary, the cost per text message is found by dividing the total cost by the number of messages, and in this case, it amounts to $0.18. This ensures a precise understanding of the cost associated with each text message, taking into consideration the practical context of monetary calculations.