SAT Math 3.3 Statistics and Probability

SAT Math 3.3 Statistics and Probability

Algebra and FunctionsUnit Conversion
Coordinates and GraphsAppropriate Units and Scales
LanguageEnglish Language
Numbers and OperationsRatios, Proportions, and Percents
Problem Solving and Data AnalysisData inferences
Product TypeSAT Math
Real Numbers and QuantitiesUnits
SAT MathStatistics and Probability

Transcript

00:25

This problem can be solved with a very simple unit conversion.

00:29

Uh…no. An even simpler unit conversion.

00:32

We’ll start with the 7 and 5/6 inches on the map we’re given.

00:35

It’s much easier to solve this thing if we’ve got it in improper fraction form,

00:40

so we’ll change it up.

00:41

7 is the same as 42/6… and 42/6 plus 5/6 equals 47/6. Done.

00:51

Now, we can convert.

00:53

When we convert between units, all we’re doing is multiplying by a fancy form of 1.

00:57

We multiply 47/6 inches by 12 miles per 1/3 inch.

01:05

And we have, 12 divided by 1/3 is really just 12 times 3, so we have 47/6 times 36.

01:14

We can divide the top and bottom by 6 to get 47 times 6, which is equal to 282.

01:20

Our answer is (D).