Question 740826: 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?
Again it is just the formula I am having issues understanding.
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website!
Typically, though not always, it is a good idea to allow the variable to represent the quantity you are trying to discover. In this case, the cost of the computer. That way, once you have solved whatever equation results from that choice and the parameters of the problem, you have your answer directly. So, with that in mind, let  represent the cost of the computer.
Then we know that the freshmen have agreed to raise  of the money, and the sophomores have agreed to raise  of the money. And finally we know that once and are subtracted from the cost of the computer, $400 remains to be paid by the SGA. Therefore:
Solve for
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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