document.write( "Question 1209475: Hi
\n" ); document.write( "If Bob reads 25 pages a day he will need one more day to finish a book. If he reads 30 pages a day he will finish 2 days ahead of schedule. How many pages are there in the book.
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Algebra.Com's Answer #848904 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "If Bob reads 25 pages a day he will need one more day to finish a book.
\n" ); document.write( "If he reads 30 pages a day he will finish 2 days ahead of schedule.
\n" ); document.write( "How many pages are there in the book.
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\n" ); document.write( "\n" ); document.write( " Here is another/different way to solve the problem.\r
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document.write( "Let P be the number of pages in the book.\r\n" );
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document.write( "If Bob reads 25 pages per day, he needs    days to finish reading.\r\n" );
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document.write( "If Bob reads 30 pages per day, he needs    days to finish reading.\r\n" );
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document.write( "The difference is 1 + 2 = 3 days, according to the problem.  \r\n" );
document.write( "So, we write this time equation\r\n" );
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document.write( "     -  = 3  days.    (1)\r\n" );
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document.write( "It is your setup equation.  \r\n" );
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document.write( "To solve it, first multiply both sides by 150; then simplify\r\n" );
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document.write( "    6P - 5P = 3*150\r\n" );
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document.write( "       P    = 450.\r\n" );
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document.write( "At this point, the solution is complete.\r\n" );
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document.write( "ANSWER.  There are 450 pages in the book .\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "In this problems, 25 pages per day and 30 pages per day are the rates,
\n" ); document.write( "and equation (1) is the \"time\" equation.\r
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\n" ); document.write( "\n" ); document.write( "So, the situation is a full analogue to Travel and Distance problems solved using a \"time equation\".\r
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\n" ); document.write( "\n" ); document.write( "The total number of pages plays the role of the total one-way distance.\r
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