The school store is running low on erasers for pencils. They want to order more, so they look at the prices for 4 brands. Which one is the best buy?
Brand A: 20 for $2.50
Brand B: 35 for $3.25
Brand C: 50 for $5.25
Brand D: 100 for $10.00
To determine the best buy, we need to calculate the price per eraser for each brand.
For Brand A: $2.50 / 20 erasers = $0.125 per eraser
For Brand B: $3.25 / 35 erasers = $0.093 per eraser
For Brand C: $5.25 / 50 erasers = $0.105 per eraser
For Brand D: $10.00 / 100 erasers = $0.10 per eraser
The best buy is Brand B, which has a price of $0.093 per eraser.