ACT Preparation / Unit 7 ACT 0620 short lesson, about 20 seconds
Ratio, Rate and Unit Rate
Captions available
The idea
A ratio compares two quantities by division and is written in lowest terms. A rate compares quantities with different units; a unit rate gives the amount per one unit.
In practice
12 boys to 18 girls is 2 to 3; 150 miles in 3 hours is 50 miles per hour.
Where people slip
Order matters in a ratio: 2 to 3 is not 3 to 2.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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