document.write( "Question 1045212: an air force jet and refueling plane, which are initially 210 km/he apart, fly toward each other. If their rates are 800 and 250km/hr, how long will it take for them to meet \n" ); document.write( "

Algebra.Com's Answer #660604 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Since their speeds will add, you can think
\n" ); document.write( "of this as one of them standing still and
\n" ); document.write( "the other one moving at the sum of their
\n" ); document.write( "speeds
\n" ); document.write( "---------------
\n" ); document.write( "Let $\"+t+\"$ = time in hrs for them to meet
\n" ); document.write( " $\"+210+=+%28+800+%2B+250+%29%2At+\"$
\n" ); document.write( " $\"+210+=+1050t+\"$
\n" ); document.write( " $\"+t+=+.2+\"$ hrs
\n" ); document.write( "convert to minutes:
\n" ); document.write( " $\"+.2%2A60+=+12+\"$
\n" ); document.write( "It will take them 12 minutes to meet
\n" ); document.write( "-------------------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+d%5B1%5D+=+800%2A.2+\"$
\n" ); document.write( " $\"+d%5B1%5D+=+160+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+d%5B2%5D+=+250%2A.2+\"$
\n" ); document.write( " $\"+d%5B2%5D+=+50+\"$
\n" ); document.write( "------------------
\n" ); document.write( " $\"+d%5B1%5D+%2B+d%5B2%5D+=+210+\"$
\n" ); document.write( " $\"+160+%2B+50+=+210+\"$
\n" ); document.write( " $\"+210+=+210+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );