Answer :
The question is asking what is 15% of $300.
"of" means multiply, and 15% is the same as 0.15 (% means divide by 100), so you have
0.15 * $300 = $45.
"of" means multiply, and 15% is the same as 0.15 (% means divide by 100), so you have
0.15 * $300 = $45.