document.write( "Question 936796: Two cars (X and Y) leave in the same direction. The car X leaves with a constant speed of 60 km/h and the car Y leaves with a constant speed of 90 km / h. For any distance D (in km) how long does it take (in minutes) for the car Y to reach this distance in relation to the other car.
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Algebra.Com's Answer #570275 by TimothyLamb(4379) $\"\"$ $\"About$

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s = d/t
\n" ); document.write( "t = d/s
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\n" ); document.write( "speed of car y relative to car x:
\n" ); document.write( "90 - 60 = 30 kph
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\n" ); document.write( "t = D/30 hr * (60 minutes/hr)
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\n" ); document.write( "answer:
\n" ); document.write( "t = 2*D minutes
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