SAT Math 3.3 Statistics and Probability
|Algebra and Functions||Unit Conversion|
|Coordinates and Graphs||Appropriate Units and Scales|
|Numbers and Operations||Ratios, Proportions, and Percents|
|Problem Solving and Data Analysis||Data inferences|
|Product Type||SAT Math|
|Real Numbers and Quantities||Units|
|SAT Math||Statistics and Probability|
This problem can be solved with a very simple unit conversion.
Uh…no. An even simpler unit conversion.
We’ll start with the 7 and 5/6 inches on the map we’re given.
It’s much easier to solve this thing if we’ve got it in improper fraction form,
so we’ll change it up.
7 is the same as 42/6… and 42/6 plus 5/6 equals 47/6. Done.
Now, we can convert.
When we convert between units, all we’re doing is multiplying by a fancy form of 1.
We multiply 47/6 inches by 12 miles per 1/3 inch.
And we have, 12 divided by 1/3 is really just 12 times 3, so we have 47/6 times 36.
We can divide the top and bottom by 6 to get 47 times 6, which is equal to 282.
Our answer is (D).