Question 1148086
.
<pre>

{{{1}}}{{{3/4}}} miles = {{{7/4}}} miles.


The two boys approach each other at the rate of 3+4 = 7 miles per hour.


Hence, they meet each other in  {{{((7/4))/7}}} = {{{1/4}}} of an hour = 15 minutes.   <U>ANSWER</U>
</pre>

Solved.