Scenario: Supermarket Comparison - Find the best deals by comparing unit rates!
You're at the supermarket comparing pens. Brand A costs $12.50 for 5 pens, and Brand B costs $7.50 for 3 pens. Which is the better deal?
Unit Rate Formula: Unit Rate = Total Cost ÷ Number of Items
$12.50 ÷ 5 pens = $2.50 per pen
$7.50 ÷ 3 pens = $2.50 per pen
Conclusion: Both brands have the same unit rate! The price per pen is identical.
A car travels 240 miles in 3 hours. What is the car's speed?
Solution: Speed = Distance ÷ Time = 240 miles ÷ 3 hours = 80 miles/hour
A typist types 300 words in 5 minutes. What is the typing rate?
Solution: Rate = Words ÷ Time = 300 words ÷ 5 minutes = 60 words/minute
6 apples cost $1.80. What is the unit rate per apple?
Your calculation:
Compare: 6 apples for $1.80 vs 10 apples for $2.90. Which is the better deal?
Your comparison: