SOLUTION: In order to purchase a computer for the Student Activities office, the freshman class decides to raise 1/3 of the money, and the sophomore class decides to raise 1/2 of the money.

Question 740825: In order to purchase a computer for the Student Activities office, the freshman class decides to raise 1/3 of the money, and the sophomore class decides to raise 1/2 of the money. The Student Government Association agrees to contribute the rest, which amounted to $400. What was the cost of the computer?
I am having trouble with finding formulas. I have read my textbook a thousand times and just do not understand.
Found 2 solutions by solver91311, htmentor:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

I already answered this one.

John

Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it

Answer by htmentor(1343) (Show Source): You can put this solution on YOUR website!
Let C = the cost of the computer
The contributions are C/3, C/2 and 400, and these contributions add up to the cost of the computer, C:
C/3 + C/2 + 400 = C
Now you just have to solve for C.
RELATED QUESTIONS
In order to purchase a computer for the Student Activities office, the freshman class... (answered by solver91311)
in a particular class, there are 3 freshman, 5 sophomores, 11 juniors, and 2 seniors. if... (answered by stanbon)
2. A college has a student body of 5,000 students and the president of the college was to (answered by )
If a class of 6 students has an average grade of 78 before a seventh student joins, what... (answered by greenestamps)
A High school class wants to raise money by recycling news papers. The class decides to... (answered by KnightOwlTutor)
The class of 2011 is selling t-shirts and sweatshirts to raise money for the Junior Prom. (answered by rfer)
A student council collecs aluminum pop tabs to raise money to purchase a wheelchair. A... (answered by richwmiller)
A student council collects aluminum pop tabs to raise money to purchase a wheelchair. A... (answered by richwmiller)
There are 200 girls in a freshman class. This is 40% of the freshman class. How many... (answered by stanbon)