Two planes left the same airport traveling in opposite directions. The first plane left the airport at 2 P.M. traveling at an average rate of 500 mph. The second plane left the airport at 4 P.M. traveling at an average rate of 550 mph. When will the planes be 3100 miles apart?
ok so the first plane has 2 hours head start means 2 times 500=1000=1000mile head start so now
3100-1000=2100
in how many hours will the conbined planes travel 2100 500+550=1050 1050 times how many hours=2100 divide both sides by 1050 hours=2 4pm was our base time 4+2=6 answer is 6PM
