00:01
A community fair cost $12 for adults and $5 for children.
00:07
And they sold 312 tickets.
00:10
So let's call adults x and children y.
00:18
So we'll say x plus y is equal to 312 because we know they sold 312 tickets total.
00:27
12x plus 5y is equal to 2 ,204 because that's how much money they made.
00:35
And now we want to know how many adult and children's tickets were sold.
00:40
So let's go ahead and solve this using substitution.
00:44
So i'm going to take my first equation and solve it for x.
00:49
So x would be equal to 312 minus y.
00:54
So i'm going to say 12 times 312 minus y plus 5y is equal to 2 ,204.
01:06
And using the distributive property, 12 times 312 is 3 ,744 minus 12 y plus 5y is equal to 2 ,204...