Homework Help: College Math

Posted by Carol on Tuesday, August 28, 2012 at 5:26pm.

The posted speed limit on many U.S. highways is 65 miles per hour. What is this speed in feet per second?

My answer was 5720 feet per second.
The other answers that would be a possibility are: (A)3600 feet per second, (B)95 1/3 feet per second, (C) 5720 feet per second, which is the one I picked, and (D) 343200 feet per second.

Is my answer correct?

College Math - Ms. Sue, Tuesday, August 28, 2012 at 5:36pm
No.

1 mile = 5,280 feet

1 hour = 3,600 seconds
College Math - Carol, Tuesday, August 28, 2012 at 5:53pm
So the answer would be 95 1/3. the figuring out on this would be 65 x 3600 devided by 5280 and that is how I got this answer.
College Math - Ms. Sue, Tuesday, August 28, 2012 at 5:55pm
Yes. 95 1/3 is correct.

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