Solve this real-world problem using a system of equations. The O'Donnells are having a birthday party for their son, and they plan to have a clown bring balloons to the party. Balloon Express charges $2 per balloon and $10 for delivery. Balloon Mania charges $1.50 per balloon and $20 for delivery. If the O'Donnells plan to order 30 balloons, which company should they choose, and how much will they save? (1 point)

Balloon Express: $25

Balloon Mania: $5

Balloon Mania: $25

Balloon Express, $5

1 answer

Let's represent the cost of ordering balloons from Balloon Express as E and the cost of ordering balloons from Balloon Mania as M.

From the information given, we know that:
E = 2 * number of balloons + 10
M = 1.50 * number of balloons + 20

We also know that the O'Donnells plan to order 30 balloons:
number of balloons = 30

Using these equations, we can find the cost for each company:

E = 2 * 30 + 10
E = 60 + 10
E = 70

M = 1.50 * 30 + 20
M = 45 + 20
M = 65

Therefore, the O'Donnells should choose Balloon Mania because they will save $5 compared to Balloon Express.