Madeline is selling sketches for $2 and

color prints for $5 at a comic convention.

Madeline leaves the table and asks her

friend Chris to run the table for her. She

returns to find Chris has made $93. Chris

doesn't know how many of each item he

sold, but he remembers that he sold a

total of 30 sketches and colored prints.

Below is Madeline's work in determining

how many of each item was sold.

A, B, C

Step-by-step explanation:

When we look at her work, which you write in comment we can see that she make mistake. So lets answer your questions.

A) Because we cannot have 8.25 prints, we can just have integer 8 or 9. or some other integer.

B) explain Madeline mistake:

2 (30-p) + 5p=93 in this she needs to multiply 2 by 30 and 2 by - p, which she didnt.

C) When we correct mistake we can evaluate how much Chris sell.

60-2p+5p=93

3p=33

p=11

s=30-p=19

So, Chris sells prints 11 and sketches 19