Final answer:
To calculate the total cost for 2.5 dozen pens, multiply the cost per dozen ($56.50) by the number of dozens (2.5), which results in a total cost of $141.25 for Ruchi's pens.
Step-by-step explanation:
The question involves calculating the total cost of pens needed by Ruchi for a meeting. We are told that one dozen pens cost $56.50. To find the total cost for 2.5 dozen pens, we can follow these steps:
- Determine the cost per dozen, which is given as $56.50.
- Multiply the cost per dozen by the number of dozens Ruchi needs, which is 2.5.
- Perform the calculation: 2.5 dozen x $56.50 per dozen = $141.25.
So, the total cost for 2.5 dozen pens will be $141.25.