document.write( "Question 186891: i need help please\r
\n" ); document.write( "\n" ); document.write( "How many hours will it take a small plane going 270mph to over take
\n" ); document.write( "another plane going 220mph if the slower plane has a head star of 1/2 hour?\r
\n" ); document.write( "\n" ); document.write( "please help
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Algebra.Com's Answer #140093 by jojo14344(1513)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "Let's see how far \"P%5B1%5D\" travelled in that \"%281%2F2%29hr\":
\n" ); document.write( "*Remember\"system%28Speed=Distance%2Ftime%29\"--->\"D%5B1%5D=S%2At\"
\n" ); document.write( "\"D%5B1%5D=220%2A0.50=110miles\"
\n" ); document.write( "The Distance is constant since both on the same directions: \"D%5B1%5D=D%5B2%5D\"
\n" ); document.write( "*And DON'T FORGET to add 110 miles to \"P%5B1%5D\" since it has head start.
\n" ); document.write( "\"D%5B1%5D%2B110=D%5B2%5D\"
\n" ); document.write( "\"S%5B1%5D%2At%2B110=S%5B2%5D%2At\"
\n" ); document.write( "\"220%2At%2B110=270%2At\"
\n" ); document.write( "\"270t-220t=110\"---->\"50t=110\"--->\"cross%2850%29t%2Fcross%285%29=cross%28110%292.2%2Fcross%2850%29\"
\n" ); document.write( "\"highlight%28t=2.2hrs%29\" *Exactly at this time of travelling, \"D%5B1%5D=D%5B2%5D\"
\n" ); document.write( "Let's check:
\n" ); document.write( "\"D%5B1%5D=220%2A2.2%2B110=484%2B110=594miles\"
\n" ); document.write( "\"D%5B2%5D=270%2A2.2=594miles\"
\n" ); document.write( "Therefore, AFTER 2.2 hrs, Plane 2 will overtake Plane 1,it's faster with Speed of 270mph.
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo
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