Answer :
Given:
a.) A bookstore had 96 copies of magazines yesterday it’s sold 1/4 of them today.
b.) It sold 1/3 of what remained.
Let's determine how many copies of the magazines are left.
Step 1: A bookstore had 96 copies of magazines yesterday it’s sold 1/4 of them today.
[tex]\text{ 96 x }\frac{1}{4}\text{ = }\frac{96}{1}\text{ x }\frac{1}{4}\text{ = }\frac{96}{4}\text{ = }24[/tex]Remaining copies = 96 - 24 = 72 magazines
Step 2: It sold 1/3 of what remained.
[tex]\text{ 72 x }\frac{1}{3}\text{ = }\frac{72}{1}\text{ x }\frac{1}{3}\text{ = }\frac{72}{3}\text{ = }24[/tex]Remaining copies = 72 - 24 = 58 magazines
Therefore, 58 copies of magazines are left.
The answer is 58.