Algebra
posted by Landon .
The attendance at a baseball game was 400 people. Student tickets cost $2.00 and adult tickets cost $3.00. Total ticket sales were $1050. How many tickets of each type were sold?

number of students  x
number of adults 400x
solve for x
2x + 3(400x) = 1050 
Just noticed that your same question has now been asked and answered 6 times
As a matter of fact I answered this same one in Oct 2011, doing it exactly the same way.
Who would have thought ??