Question

Unit rates 2NB You've won a new prize! Go to your game board. Shivani's retirement party will cost $81 if she invites 27 guests. If there are 28 guests, how much will Shivani's retirement party cost? Solve using unit rates. $

Answer 1

To find the cost of Shivani's retirement party with 28 guests using unit rates, we can start by determining the cost per guest based on the information provided.

1. **Calculate the cost per guest:**
\[
\text{Cost per guest} = \frac{\text{Total cost}}{\text{Number of guests}} = \frac{81}{27}
\]
\[
\text{Cost per guest} = 3
\]
So, the cost per guest is $3.

2. **Now calculate the total cost for 28 guests:**
\[
\text{Total cost for 28 guests} = \text{Cost per guest} \times \text{Number of guests}
\]
\[
\text{Total cost for 28 guests} = 3 \times 28 = 84
\]

Therefore, if there are 28 guests, Shivani's retirement party will cost **$84**.