SOLUTION: Two private airplanes travel toward each other from cities that are 780 km apart at speeds of 190 km/h and 200 km/h. They left at the same time. In how many hours will they meet?
Algebra ->
Expressions
-> SOLUTION: Two private airplanes travel toward each other from cities that are 780 km apart at speeds of 190 km/h and 200 km/h. They left at the same time. In how many hours will they meet?
Log On
Question 884355: Two private airplanes travel toward each other from cities that are 780 km apart at speeds of 190 km/h and 200 km/h. They left at the same time. In how many hours will they meet? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Two private airplanes travel toward each other from cities that are 780 km apart at speeds of 190 km/h and 200 km/h. They left at the same time. In how many hours will they meet?
---
Their closing speed is 190+200 = 390 km/hr
-----
Time to meet is d/r = 780390 = 2 hrs
-------------------------------------
Cheers,
Stan H.
------------------
(