document.write( "Question 1121843: The stage of a rocket burns 28s longer than the second stage. If the total burning time for both stages is 152 s how long does each stage burn? \n" ); document.write( "

Algebra.Com's Answer #737841 by ikleyn(52914) $\"\"$ $\"About$

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\n" ); document.write( "The $\"highlight%28first%29\"$ stage of a rocket burns 28 s longer than the second stage.
\n" ); document.write( "If the total burning time for both stages is 152 s how long does each stage burn?
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document.write( "From the condition, you have these two equations\r\n" );
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document.write( "x + y = 152    (1)   (x = the first stage burning time)\r\n" );
document.write( "x - y = 28     (2)\r\n" );
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document.write( "Add the two equations. You will get  \r\n" );
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document.write( "2x = 152 + 28 = 180  ====>  x = 90 seconds for the first stage.\r\n" );
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document.write( "Then y = 152 - 90 = 62 seconds for the seconf stage.\r\n" );
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