SOLUTION: ok i have to define a variable and write an equation to model the situation.then solve...here is the problem: ENTERTAINMENT: movie tickets for an adult and three children cost $20

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: ok i have to define a variable and write an equation to model the situation.then solve...here is the problem: ENTERTAINMENT: movie tickets for an adult and three children cost $20      Log On


   

Question 15814: ok i have to define a variable and write an equation to model the situation.then solve...here is the problem:
ENTERTAINMENT: movie tickets for an adult and three children cost $20. An adults ticket costs $2 more than a child's ticket. find the cost of an adult's ticket.
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
ENTERTAINMENT: movie tickets for an adult and three children cost $20. An adults ticket costs $2 more than a child's ticket. find the cost of an adult's ticket.
Let x = childs ticket; x+2=adult ticket
And they bought 3 child tickets and 1 adult, so we have;
3x+(x+2)=20
Add like terms;
4x+2=20;
subtract 2 from both sides;
4x+2-2=20-2
4x=18
Divide each side by 4;
4x%2F4=18%2F4
x=4.5
So a childs ticket cost $4.50;
That means the adult ticket would be;
4.5+2=$6.5
Hope you understand
=)