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What is the length of the line that represents 6.2 miles if the scale on a map is one inch equals 20 miles?
Wiki User
∙ 14y ago
You can use simple ratios to get the answer. Set up the ratio and then derive an algebraic equation from it that you can easily solve. Here's how.
In English: one inch is to 20 miles as ? inches is to 6.2 miles.
Using ratios: 1 : 20 :: x : 6.2
Note how you use an x to represent the question mark, that is, the unknown quantity. You could have used any letter or symbol, but x is the most common and most familiar.
Now, set up your equation and solve for x: 1/20 = x/6.2
Solving for x:
1/20 = x/6.2
20x = 6.2 (Use "cross-multiplication" to arrange the equation this way)
x = 6.2/20
x = 0.31 inch
So, a line that is 0.31 inch -- a bit less than one third of an inch -- represents a distance of 6.2 miles on your particular map.
OR
DIVIDE 6.2 BY 20
20 GOES INTO 6.2 EXACTLY ==.31
PRETTY EASY EH?
Yall SHUTUP!
Wiki User
∙ 14y ago
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If one inch on the map scale is 750 miles how many miles is a half inch equal?
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Which has the smaller scale a map on which 1 inch equals 100 miles or a map on which 1 equals 200 miles?
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