document.write( "Question 1134823: a motorist travelling at constant speed leaves A at 11 00 intending to arrive B , 100km away at 1300 . half an hour later one of the tyres are punctured ands he is delayed for 18 mins . how fast must he then proceed in order to reach B on time ? at what time will he meet a cyclist who leaves town B at 11 45 for A ., travelling at a contant speed of 20 km/h ? make a distancwe time graph \n" ); document.write( "
Algebra.Com's Answer #752318 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "a motorist travelling at constant speed leaves A at 11 00 intending to arrive B , 100km away at 1300 . half an hour later one of the tyres are punctured ands he is delayed for 18 mins . how fast must he then proceed in order to reach B on time ? at what time will he meet a cyclist who leaves town B at 11 45 for A ., travelling at a contant speed of 20 km/h ? make a distancwe time graph
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The other person's answer of 31.25 km/h can't be correct and just doesn't make sense.
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document.write( "With a time of 2 (1300  -  1100) hours to cover a distance of 100 km, his planned average-speed was \"matrix%281%2C4%2C+100%2F2%2C+or%2C+50%2C+%22km%2Fh%22%29\" for the trip
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document.write( "At \"matrix%281%2C6%2C+50%2C+%22km%2Fh%22%2C+and%2C+1%2F2%2C+hour%2C+later%29\", distance covered was: \"matrix%281%2C6%2C+50%2C+%22%2A%22%2C+1%2F2%2C+%22=%22%2C+25%2C+km%29\"\r
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document.write( "\"matrix%281%2C8%2C+18%2C+minutes%2C+%22=%22%2C+18%2F60%2C+hour%2C+or%2C+.3%2C+hour%29\"
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document.write( "Since he has 1.2 (2 - .5  -  .3) hours to cover 75 (100  -  25) km, then his speed MUST be: \"highlight_green%28matrix%281%2C4%2C+75%2F1.2%2C+%22=%22%2C+62.5%2C+%22km%2Fh%22%29%29\". 
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document.write( "**NOTE: He MUST travel FASTER than his planned average-speed in order to make it on time. \n" );
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