To find the rate when the portion is 27 and the base is 60, we will follow these steps:
1. Identify the portion and the base:
- Portion: 27
- Base: 60
2. Set up the rate calculation:
The rate can be calculated by dividing the portion by the base and then multiplying the result by 100 to convert it into a percentage.
3. Perform the division and multiplication:
- Divide 27 by 60.
- Multiply the result by 100 to get the percentage.
4. Calculate the rate:
When you carry out these calculations, you will find that the rate is 45%.
Therefore, the correct choice is:
c. [tex]$45 \%$[/tex]
