https://file.aiquickdraw.com/mathbot/file/1725471151751c35edlui.jpg

Let's extract the information and solve the problems step by step.

### Information from the table:
- **Store A:** 
  - Quantity sold: 12
  - Cost per mattress: $189.99
- **Store B:** 
  - Quantity sold: 5
  - Cost per mattress: $133.25
- **Store C:** 
  - Quantity sold: 6
  - Cost per mattress: $120.00
- **Store D:** 
  - Quantity sold: 17
  - Cost per mattress: $179.95

### Questions to solve:
a) What was the average number of mattresses sold per store?  
b) What was the average price per mattress?  
c) What was the total sales revenue per store?  
d) What is the average sales revenue per store?  
e) What is the average price per mattress?

I'll start by calculating each part.

### Part a) Average number of mattresses sold per store:
To calculate this, sum the quantity sold by all stores and divide by the number of stores.
\[
\text{Total quantity sold} = 12 + 5 + 6 + 17 = 40
\]
\[
\text{Average number of mattresses sold per store} = \frac{40}{4} = 10
\]

### Part b) Average price per mattress:
For this, calculate the weighted average based on the quantity sold at each store.
\[
\text{Total revenue} = (12 \times 189.99) + (5 \times 133.25) + (6 \times 120.00) + (17 \times 179.95)
\]
\[
= 2279.88 + 666.25 + 720.00 + 3059.15 = 6725.28
\]
\[
\text{Average price per mattress} = \frac{6725.28}{40} = 168.13
\]

### Part c) Total sales revenue per store:
This is already calculated during the weighted average:
- **Store A:** $2279.88
- **Store B:** $666.25
- **Store C:** $720.00
- **Store D:** $3059.15

### Part d) Average sales revenue per store:
\[
\text{Average sales revenue per store} = \frac{6725.28}{4} = 1681.32
\]

### Part e) Average price per mattress:
This is the same as calculated in part b, $168.13.

Do you need more details on any of these solutions or have any questions? Here are some related problems you might consider:

1. How would the average price per mattress change if Store C had sold 10 mattresses instead of 6?
2. If Store D had offered a

Several mattress stores in the city carry the same brand of mattress. The number of Comfort mattresses sold and the price charged by each store are shown below: 
Store A: 12 mattresses at $189.99 
Store B: 5 mattresses at $133.25 
Store C: 6 mattresses at $120.00 
Store D: 17 mattresses at $179.95 
a) What was the average number of mattresses sold per store? 
b) What was the average price per mattress? 
c) What was the total sales revenue per store? 
d) What is the average sales revenue per store?

Learn how to calculate the average number of mattresses sold per store, the average price per mattress, and the total and average sales revenue per store. This problem covers essential mathematical concepts like averages, weighted averages, and revenue calculation. Suitable for students in Grades 7-9.

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