document.write( "Question 1005182: Ivan drives to the metro station each morning and just to catch his train. He drives at an average speed of 30 miles per hour. Unfortunately this morning, there was a lot of traffic. At the halfway point Ivan found that he had averaged only 15 miles per hour. How fast must Ivan drive for the rest of the way to catch his train? \n" ); document.write( "

Algebra.Com's Answer #621529 by josgarithmetic(39617) $\"\"$ $\"About$

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Key phrase, \"at the half-way point\".\r
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\n" ); document.write( "\n" ); document.write( "How fast needs to drive, r.\r
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document.write( "Regular            30          ()       d\r\n" );
document.write( "First half         15         ()       d/2\r\n" );
document.write( "Next half          r          ()       d/2\r\n" );
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\r
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\n" ); document.write( "\n" ); document.write( "Fill in the missing time expressions.\r
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document.write( "Regular            30         (d/30)        d\r\n" );
document.write( "First half         15         d/(2*15)       d/2\r\n" );
document.write( "Next half          r         d/(2r)       d/2\r\n" );
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\n" ); document.write( "Ivan will be late, and can NOT catch the train. He used up all the needed travel time at the half-way point of the trip. \n" ); document.write( "

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