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Reason quantitatively and use units to solve problems Videos 5 videos
Approximately 874 people per day wonder what a unit rate is. If you're one of them, check out our video on unit rates and how to use them. (We just...
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Description:
Approximately 874 people per day wonder what a unit rate is. If you're one of them, check out our video on unit rates and how to use them. (We just made up that 874 number, but it’s no surprise; we make up 22 numbers per minute here at Shmoop.)
- Number and Quantity / Reason quantitatively and use units to solve problems
- Number and Quantity / Reason quantitatively and use units to solve problems
- Number and Quantity / Reason quantitatively and use units to solve problems
- Number and Quantity / Reason quantitatively and use units to solve problems
- Number and Quantity / Reason quantitatively and use units to solve problems
Transcript
- 00:07
Unit Rate, a la Shmoop. Have you ever wondered how to compare two
- 00:10
entirely different categories of terms, such as warthogs and distance?
- 00:17
Here is where a "rate" comes in handy. It's important to use rates for good, not
- 00:28
evil: an important message to all future mechanics out there.
- 00:38
In math, a rate is a comparison, or ratio, between two terms that are measured in different
Full Transcript
- 00:43
units. If you were to come across 60 warthogs over
- 00:46
a two mile stretch... ...We'd suggest you get the heck outta dodge.
- 00:49
Those things are vicious. In mathematical terms, this incidence of warthogs
- 00:58
can be expressed as a rate of 60 warthogs for two miles.
- 01:01
However, a "unit rate" reduces one of the terms to a single unit. It's like "magic"...
- 01:14
or to use a highly technical term: "math." So we have a unit rate of 30 warthogs per
- 01:22
mile. You might be thinking, <<DS nerdy voice>>
- 01:25
"Fine. Now I know what a unit rate is, but when will I ever need to compare warthogs
- 01:31
to miles?" Touché. But what about candy bars per dollar?
- 01:34
If a candy bar is $1.50, how many candy bars would you get for your dollar?
- 01:38
All right, we gave you a tricky one. The answer is two-thirds of a candy bar. And when is
- 01:46
that ever enough? Unit rates are used all the time in our everyday
- 01:52
lives... ...such as miles per hour for driving, dollars
- 01:55
and cents per pound when buying food, and points per game in basketball.
- 02:00
Without unit rates, the world would be a vastly more complicated place.
- 02:04
We wouldn't know how many miles per gallon our vehicles receive.
- 02:10
Or how many calories per meal we should eat to meet our nutritional goals. Assuming we
- 02:15
have any. Even many professional writers, including
- 02:20
freelance journalists, are paid by the word. Unit rates are all around us, and they help
- 02:28
keep the world from descending into chaos. Let's hear it for Unit Rates - keeping the
- 02:35
world from falling into disorder. We thank you, on behalf of neat freaks everywhere.
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