SOLUTION: My question is a word problem. I know it may sound very simple but I dont know how many variables I should use. How can I make this into an equation? Word Problem: If 9% of t

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: My question is a word problem. I know it may sound very simple but I dont know how many variables I should use. How can I make this into an equation? Word Problem: If 9% of t      Log On


   



Question 4879: My question is a word problem.
I know it may sound very simple but I dont know how many variables I should use. How can I make this into an equation?
Word Problem: If 9% of the members buy tickets, then we will sell 252 tickets to this group?

Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
There is only one variable, since you only need to find one unknown quantity. I think you meant to ask, "If we sell 252 tickets, then how many people are in the group?" Am I right?

Let x = the number people in the group.
Your sentence says 9% of the members buy tickets (which equals 252), so
.09+%2A+x+=+252

To solve for x, you need to divide both sides by .09:
%28.09%2Ax%29%2F.09+=+252%2F.09

Next, multiply numerator and denominator by 100 to clear the decimal from the denominator.
+x+=+25200%2F9+=+2800 people in the group.

R^2 at SCC