SOLUTION: Transforming equations with multiplication and division. How do I put the following question into an expression with a variable? A police helicopter clocked an automobile for

Question 155317This question is from textbook Algebra - Structure and Method
: Transforming equations with multiplication and division.
How do I put the following question into an expression with a variable?
A police helicopter clocked an automobile for 10 seconds over a stretch of highway on fifth of a mile long. At what reate was the automobile traveling in miles per A. Second? B. Hour?
Here's what I have so far..
Let X = Miles per second
X = .2(miles) / 10 sec.
X= .02 mps
Let Y = Miles per hour
Y = [.2(miles / 10 sec.] * 3600
Y = 72 mph
Is there anything I'm forgetting?
I feel like I'm not transforming anything and just solving for the mps and mph. Any help would be greatly appreciated. This question is from textbook Algebra - Structure and Method

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How do I put the following question into an expression with a variable?
A police helicopter clocked an automobile for 10 seconds over a stretch of highway on fifth of a mile long.
--------------------------------------------------------
At what rate was the automobile traveling in miles per
A. Second?
[1/5] mile / [10]sec = [1/50](mile/sec)
--------------------------------------------------------
B. Hour?
{[1/5] mile / [10]sec } = {[1/50](mile/sec)}*{3600 sec/1 hr}
= 72 miles/hr.
============================
Cheers,
Stan H.

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