Answer: 5, 15
Step-by-step explanation:
Given
Mr. Ramirez purchased 20 concert tickets
The total price of 20 tickets is [tex]\$225[/tex]
Concert ticket costs [tex]\$15[/tex] for adults and [tex]\$10[/tex] for children
suppose there are x adults and y children
[tex]\therefore x+y=20\quad \ldots (i)\\\\\Rightarrow 15x+10y=225\quad \ldots(ii)[/tex]
Solving (i) and (ii) we get
[tex]x=5,\ y=15[/tex]
So, there are 5 adults and 15 children
