Posted by **katie** on Thursday, February 21, 2013 at 7:41pm.

driving along a crowded freeway you notice that it takes a time to go from one mile marker to the next. when you increase your speed by 8.4 mi/hr the time to go one mile decreased by 14 seconds. What was your original speed?

- college algebra -
**Steve**, Thursday, February 21, 2013 at 11:40pm
if your sped is s, and keeping everything in hours:

1/(s+8.4) = 1/s - 14/3600

s = 42.465 mi/hr

- college algebra -
**Anonymous**, Saturday, March 5, 2016 at 10:14pm
driving along a crowded freeway you notice that it takes a time to go from one mile marker to the next. when you increase your speed by 8.4 mi/hr the time to go one mile decreased by 14 seconds. What was your original speed?

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