Problema Solution
two airplanes, traveling in opposite directions, leave an airport at the same time. If one plane averages 480 mi/hr and other averages 520 mi/hr, how long will it take before they are 2000 mi apart?
Answer provided by our tutors
they are travelling in opps direction
relative distance required = 2000 miles
relative speed of one plane as seen by other as it is itself moving =520+480=1000
time required =2000/1000
=2 hrs