Question 1049058
 two planes leave and airport one traveling north at 950 km/h and the other south at 850 km/h. how long will it take the two planes to be 5,000 km apart 
------
Let the time be "x"::
North distance:: 950x km
South distance:: 850x km
-------------------------------
Equation::
950x + 850x = 5000
1800x = 5000
x = 50/18 hr = 2.78 hrs = 2 hr 46 min 48 sec
-------------------
Cheers,
Stan H.
--------------