Given :
Ruth wants to buy a skateboard for $44.
She has $100 in her account. She spent $11.36 to buy stationary.
She also wants to buy some comic books for $3.72 each.
To Find :
The maximum number of comic books, n, that Ruth can buy so that she has enough money left to buy the skateboard.
Solution :
Money left after buying skateboard and stationary is :
Money left = $(100 - 11.36 - 44)
Money left = $44.64
Number of comic she can buy is :
![n = (44.64)/(3.72)\\\\n = 12](https://img.qammunity.org/2021/formulas/mathematics/high-school/m9v9hoocixky5mud0mhktd0os9rnt9902s.png)
Therefore, she can buy a maximum of 12 books.
Hence, this is the required solution.