document.write( "Question 1154830: a plane travels at 100km/h one way and returns at 165km/h the whole trip takes 30mins. how long does it take to on the 1st trip ( 100km/h ) \n" ); document.write( "

Algebra.Com's Answer #777320 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "The ratio of the speeds is 100/165.\r\n" );
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document.write( "Hence, the entire time of 30 minutes consists of two time intervals with the reciprocal ratio.\r\n" );
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document.write( "So, the time for the 100 km trip is   =  18.68 minutes (approximately).    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "Alan, \r
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\n" ); document.write( "\n" ); document.write( "notice that your answer 33/41 hours = $\"%2833%2F41%29%2A60\"$ = 48.3 minutes is LONGER than 30 minutes (!)\r
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