document.write( "Question 960908: Two planes make a 1000 mile flight, one flying 75 miles per hour faster than the other. The quicker plane makes the trip 3 hour faster. lHow long did it take the slower oplane to complete the flight? \n" ); document.write( "
Algebra.Com's Answer #587262 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "Two planes make a 1000 mile flight, one flying 75 miles per hour faster than the other. The quicker plane makes the trip 3 hour faster. lHow long did it take the slower oplane to complete the flight?
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Let time taken by slower plane be T
\n" ); document.write( "Then time taken by faster plane = T – 3
\n" ); document.write( "Speed of slower plane, equals speed of faster plane, less difference in speeds, OR
\n" ); document.write( "\"1000%2FT+=+1000%2F%28T+-+3%29+-+75\"
\n" ); document.write( "1,000(T – 3) = 1,000T – 75T(T – 3) ------- Multiplying by LCD, T(T – 3)
\n" ); document.write( "\"1000T+-+3000+=+1000T+-+75T%5E2+%2B+225T\"
\n" ); document.write( "\"75T%5E2+-+1000T+-+225T+%2B+1000T+-+3000+=+0\"
\n" ); document.write( "\"75T%5E2+-+225T+-+3000+=+0\"
\n" ); document.write( "\"75%28T%5E2+-+3T+-+40%29+=+75%280%29\"
\n" ); document.write( "\"T%5E2+-+3T+-+40+=+0\"
\n" ); document.write( "(T - 8)(T + 5) = 0
\n" ); document.write( "T, or time taken by slower plane = \"highlight_green%288%29\" hours OR T = - 5 (ignore) \n" ); document.write( "
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