Question 1091556
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<pre>
Let x be the Dana' speed, in miles per hour.
Then Rosa' speed is  (x +7) mph.


The equation is 

7x + 7*(x+7) = 175.

and it represents the distance between them after 7 hours.


Simplify and solve it for x:

7x + 7x = 175 - 49,

14x = 126  ====>  x = {{{126/14}}} = 9.


<U>Answer</U>.  Dana' speed is 9 mph.  Rosa' speed is 9+7 = 16 mph.
</pre>

Solved.



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&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/travel/Travel-and-Distance-problems-for-two-bodies-moving-toward-each-other.lesson>Travel and Distance problems for two bodies moving in opposite directions</A> 

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