SOLUTION: The speed of sound is approximately 760 mph in air. If a gun is fired 2/3 miles away, how long will it take the sound to reach you? Enter your answer as a fraction.

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Question 833921: The speed of sound is approximately 760 mph in air. If a gun is fired 2/3 miles away, how long will it take the sound to reach you?
Enter your answer as a fraction.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+d+=+r%2At+
+t+=+d%2Fr+
+t+=+%282%2F3%29+%2F+760+
Divide top and bottom by 2
+t+=+%28+1%2F3%29+%2F+380+
+t+=+1%2F1140+ hrs
-------------------
To convert to seconds:
( hrs ) x ( sec / hr ) = sec
+%28+1%2F1140+%29%2A+3600+
Divide top and bottom by +60+
+60%2F19+ sec