Question 1208219
.
Runner A is initially 5.6 km west of a flagpole and is running with a constant velocity of 8.4 km/h due east. 
Runner B is initially 4.9 km east of the flagpole and is running with a constant velocity of 7.5 km/h due west.
How far are the runners from the flagpole when their paths cross?
~~~~~~~~~~~~~~~~~~~~


<pre>
Total distance between the starting points is 5.6 + 4.9 = 10.5 kilometers.

The approaching rate is 8.4 + 7.5 = 15.9 km/h.


Time to get the crossing point is  {{{10.5/15.9}}} = 0.660377358 of an hour.


The position of the crossing point is  

    5.6 - 8.4*0.660377358 =  0.052830193 km west from the flag pole, or 52.83 m west from the flag pole.


The numbers are approximate.
</pre>

Solved.