Algebra.Com's Answer #818549 by ikleyn(52865)![\"\"](\"/images/stars/stars-13.gif\")  
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document.write( "A group of graduating students rented a bus for their field trip for 6,000.
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document.write( "10 of the students withdraw from the trip and as a result the share of the others was increased by 20 pesos.
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document.write( "How many were in the original field trip?
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document.write( "Let n be the number of students originally.\r\n" );
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document.write( "Write equation as you read the problem\r\n" );
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document.write( "  -  = 20 pesos.\r\n" );
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document.write( "To simplify, divide both sides by 20\r\n" );
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document.write( "  -  = 1.\r\n" );
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document.write( "From this point, you may guess the solution mentally: it is n = 60.\r\n" );
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document.write( "Alternatively, you can reduce this equation to the standard quadratic form and solve it formally,\r\n" );
document.write( "using the quadratic formula or factoring.\r\n" );
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document.write( "CHECK. I will check the original equation  -  =  - = 120 - 100 = 20 pesos. ! Correct !\r\n" );
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document.write( "ANSWER. There were 60 students originally.\r\n" );
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document.write( "Solved.\r
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