document.write( "Question 480042: if I want to pass a car just in front of me going at 55mph, what will my speed be to pass within 1/4 of a mile? Show me the mathematical work thanks. \n" ); document.write( "

Algebra.Com's Answer #852377 by ikleyn(53765) $\"\"$ $\"About$

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\n" ); document.write( "If I want to pass a car just in front of me going at 55mph, what will my speed be to pass
\n" ); document.write( "within 1/4 of a mile? Show me the mathematical work thanks.
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\n" ); document.write( "\n" ); document.write( "        As the problem is worded and presented in the post, it is incomplete, unrealistic and non-sensical.\r
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\n" ); document.write( "\n" ); document.write( "        To be complete and fully correct, the problem should also provide the length of your car,\r
\n" ); document.write( "\n" ); document.write( "        and the lengths of the gaps between the cars when you start passing and when you complete passing.\r
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\n" ); document.write( "\n" ); document.write( "        So, I will assume that the length of your car is 10 ft and both gaps between the cars\r
\n" ); document.write( "\n" ); document.write( "        are 50 ft, before and after passing.\r
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document.write( "So, during the time of passing, another car should cover the distance \r\n" );
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document.write( "    1/4 of a mile    (50 + 50 + 10) ft =  = 1210 ft.\r\n" );
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document.write( "The speed of the other car is \r\n" );
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document.write( "    55 miles per hour =  = 80.66667 feet per second (ft/s)   (rounded).\r\n" );
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document.write( "The time for the other car to cover 1210 ft is\r\n" );
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document.write( "     = 15 seconds.\r\n" );
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document.write( "Your car should cover 1/4 miles, or   = 1320 ft.   <<<---===  It is how I read \"to pass within 1/4 of a mile\"\r\n" );
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document.write( "Hence, your speed should be  \r\n" );
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document.write( "     = 88 feet per second,  or   = 60 miles per hour.\r\n" );
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document.write( "ANSWER.  Your speed should be 60 miles per hour.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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