document.write( "Question 1014720: aeroplane left 30min. later than its scheduled time and in order to reach distination 1500km away in time, it has to increase its speed by 250km/hr from its usual speed. determine its usual speed. \n" ); document.write( "

Algebra.Com's Answer #631056 by josgarithmetic(39617) $\"\"$ $\"About$

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r, usual speed
\n" ); document.write( "t, usual time\r
\n" ); document.write( "\n" ); document.write( "Basic travel rates rule, RT=D
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document.write( "           speed     time      distance\r\n" );
document.write( "Usual       r         t        1500\r\n" );
document.write( "Late       r+250      t-1/2    1500\r\n" );
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\n" ); document.write( "\n" ); document.write( "Do you know what to do with this? \n" ); document.write( "

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