Question 1178827
.
<pre>

Let x be his average speed, in miles per hour.

Then the hypothetical speed is (x+2) mph.


From the condition, you have this equation


    {{{165/x}}} = {{{176/(x+2)}}}.


To solve it, first cross-multiply; then simplify


    165*(x+2) = 176x

    165x + 165*2 = 176x

    330 = 176x - 165x

    330 = 11x

    x   = {{{330/11}}} = 30.


<U>ANSWER</U>.  His average speed was  30 mph.
</pre>

Solve, answered, explained and completed.



Do not forget to post your "THANKS" to me for my teaching.