document.write( "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? \n" ); document.write( "
Algebra.Com's Answer #534205 by stanbon(75887)\"\" \"About 
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?
\n" ); document.write( "---
\n" ); document.write( "Their closing speed is 190+200 = 390 km/hr
\n" ); document.write( "-----
\n" ); document.write( "Time to meet is d/r = 780390 = 2 hrs
\n" ); document.write( "-------------------------------------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "------------------
\n" ); document.write( "
\n" );