it is given in the question that
Alpha printing will make 400 brochures for $100. Omega printing will make 1,000 brochures for $100.
For Alpha, cost of 1 brochure is
![= (100)/(400) = $0.25](https://img.qammunity.org/2019/formulas/mathematics/middle-school/9kste7ml1c4oikkiv9sujsq028qksv63h4.png)
For Omega,
Cost of 1 brochure is
![= (100)/(1000) = 0.10](https://img.qammunity.org/2019/formulas/mathematics/middle-school/z8n8zhkw5qnabzxsjd2mi762umr559uqgn.png)
So choosing Omega printing, you will save
![= 0.25-0.10 = $0.15](https://img.qammunity.org/2019/formulas/mathematics/middle-school/ahilc8ywpgo22fqymn8452s1gg3lze9cfj.png)
on each brochure .