3'8 Ratios and Rates

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3.8 Ratios and Rates
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• Ratio
• A comparison of two numbers
• Won 10 games out of 16
• Rate
• A ratio comparing two different units
• Miles per hour, inches per second
• Unit Rate
• A rate with the denominator of one
• 20 miles in one hour

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Unit Rate

• Swim 2 miles in 40 minutes
• Pay 1.50 for 24 tea bags
• Run 2 miles in 8 minutes

2 miles 2 40 0.05 miles/min 40 min.
1.50 1.50 24 0.0625 0.06/bag 24
2 miles 2 8 0.25 miles/min. 8
min.
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Converting units

• 42 inches to feet

3.5 feet
5 hours to minutes
300 minutes