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To break even, the total cost of making the quiches needs to be equal to the total revenue from selling the quiches.
Let's say the number of quiches to be made and sold is represented by x.
The total cost of making the quiches is $30 + $0.50*x.
The total revenue from selling the quiches is $2*x.
To break even, the total cost must equal the total revenue:
$30 + $0.50*x = $2*x
Subtracting $0.50*x from both sides:
$30 = $1.50*x
Dividing by $1.50:
x = $30 / $1.50
x = 20
Therefore, the Spanish club will need to sell 20 mini quiches in order to break even.