The local package store charges $3.30 for each package plus $0.75 per ounce. The nationally-owned package store charges a flat rate of $0.95 per ounce.

Part 1:

For a 10 ounce package how much will it cost at both stores?

Part 2:

For a 15 ounce package how much will it cost at both stores?

Part 3:

For a 1 pound (16 oz), 1 ounce package how much will it cost at both stores?

Part 4:

What did you notice about which store was the least expensive for each of the 3 parts above? Which store will be cheaper for a 1 pound package?

Part 1 - Local Package Store 0.75 × 10 = $7.50 + $3.30 = $10.80

Nationally-Owned Package Store 0.95 × 10 = $9.50 + $3.30 = $12.80

Part 2 - Local Package Store #1 0.75 × 15 = $11.25 + $3.30 = $14.55

Nationally-Owned Package Store #2 0.95 × 15 = $14.25 + $3.30 = $17.55

Part 3 - Local Package Store #1 0.75×17 = $12.75 + $3.30 = $16.05

Nationally-Owned Package Store #2 0.95×17 = $16.15 + $3.30 = $19.45

Part 4 - 1. The Local Package Store was Cheaper for all three packages than the Nationally-Owned Package Store.

2. The Local Package Store is cheaper for the 1 pound 1 ounce package than the Nationally-Owned Package Store.