Respuesta :
Let the number of T-shirts school must sell before breaking even = 'x'
To break even means that,
Income earned by the school = Cost paid by the school (Equation 1)
First we will calculate the income earned by the school,
[tex] = $12 \times x [/tex]
= $ 12x
Now, we will calculate the cost paid by the school
= $[tex] (6000 + 4 \times x) [/tex]
= $(6000+4x)
Now, using equation 1
We get,
12x = 6000 + 4x
12x - 4x = 6000
8x = 6000
[tex] x = \frac{6000}{8} [/tex]
= 750
Therefore, the school must sell 750 T-shirts before breaking even.