document.write( "Question 66475This question is from textbook Algebra 1
\n" ); document.write( ": A private airplane leaves an airport and flies due south at 192 km/h. Two hours later a jet leaves the same airport and flies due south at 960 km/h. When will the jet overtake the plane?
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Algebra.Com's Answer #47132 by ptaylor(2198)\"\" \"About 
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A private airplane leaves an airport and flies due south at 192 km/h. Two hours later a jet leaves the same airport and flies due south at 960 km/h. When will the jet overtake the plane?
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\n" ); document.write( "\n" ); document.write( "distance (d)=rate (r) times Time (t)
\n" ); document.write( "d=rt\r
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\n" ); document.write( "\n" ); document.write( "Let t=time it takes for the jet to catch the private plane\r
\n" ); document.write( "\n" ); document.write( "Now we are told that when the jet leaves, the private plane has already been flying for two hours. Therefore, the private plane has already traveled a distance of (192km/h)(2h)=384 km\r
\n" ); document.write( "\n" ); document.write( "(960)(t)= distance travelled by the jet when the private plane is overtaken\r
\n" ); document.write( "\n" ); document.write( "384+(192)(t)=distance travelled by the private plane with it is overtaken\r
\n" ); document.write( "\n" ); document.write( "When these two distances are equal, the private plane will be overtaken. So our equation to solve is:\r
\n" ); document.write( "\n" ); document.write( "960t=384+192t subtract 192t from both sides:
\n" ); document.write( "960t-192t=384
\n" ); document.write( "768t=384
\n" ); document.write( "t=.5h=.5(60)m\r
\n" ); document.write( "\n" ); document.write( "t=30 minutes after the jet takes off, it will overtake the private plane\r
\n" ); document.write( "\n" ); document.write( "ck\r
\n" ); document.write( "\n" ); document.write( "(960)(.5)=384+192(.5)\r
\n" ); document.write( "\n" ); document.write( "480=384+96
\n" ); document.write( "480=480\r
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\n" ); document.write( "\n" ); document.write( "Hope this helps----ptaylor
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