SOLUTION: I am having trouble coming up with the formula to solve this word problem. I know that I can solve it once I have it - and thats where I am running into trouble. This is the word p

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Question 794678: I am having trouble coming up with the formula to solve this word problem. I know that I can solve it once I have it - and thats where I am running into trouble. This is the word problem:
Students at Hammond Middle school are raising money for the end-of-the-year school party. They decide to sell roses for Valentines Day. The students can buy the roses for 50 cents each from a wholesaler. They also need $60 to buy ribbon and paper to protect the roses as well as materials for advertising the sale. They sell each rose for $1.30
a.) How many roses must they sell to break even?
B. How much profit is there if they sell 50 roses? 100 roses? 200 roses?

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
I'll give help on part (a).

The cost for x roses along with all the other expenses is:
0.5x%2B60

The revenue for selling x roses is 1.30x.

"Break even" means the revenue and the cost are equal. You would want to then solve for the number of roses, x. I am assuming something here, which is not exactly what the original question should have intended, that the students are buying as many roses as they sell.

0.5x%2B60=1.30x
%281.3-0.5%29x=60
x=60%2F0.8
x=75 roses