document.write( "Question 1194368: Student A, Student B, and Student C have been hired to help scientists develop a new flavour of juice. There are 4200 samples to test. Each sample either contains
\n" ); document.write( "blueberry or does not. Each student is asked to taste each sample and report whether or not they think it contains blueberry. Student A reports correctly on exactly 90% of the samples containing blueberry and reports correctly on exactly 88% of the samples that do not contain blueberry. The results for all three students are shown below.
\n" ); document.write( " Student A Student B Student C
\n" ); document.write( "%samples containing blueberry 90% 98% (2m)%
\n" ); document.write( "%samples not containing blueberry 88% 86% (4m)%\r
\n" ); document.write( "\n" ); document.write( "Student B reports 315 more samples as containing blueberry than Student A. For
\n" ); document.write( "some positive integers m, the total number of samples that the three students report as containing blueberry is equal to a multiple of 5 between 8000 and 9000. What is the sum of all such values of m.\r
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Algebra.Com's Answer #848462 by proyaop(69)\"\" \"About 
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Certainly, let's break down the problem and find the sum of all possible values of 'm'.\r
\n" ); document.write( "\n" ); document.write( "**1. Define Variables:**\r
\n" ); document.write( "\n" ); document.write( "* Let 'x' be the number of samples containing blueberries.
\n" ); document.write( "* Let 'y' be the number of samples not containing blueberries. \r
\n" ); document.write( "\n" ); document.write( "**2. Set up Equations**\r
\n" ); document.write( "\n" ); document.write( "* **Total Samples:** x + y = 4200
\n" ); document.write( "* **Student B Reports More Blueberries:**
\n" ); document.write( " * 0.98x - 0.90x = 315
\n" ); document.write( " * 0.08x = 315
\n" ); document.write( " * x = 3937.5\r
\n" ); document.write( "\n" ); document.write( "* **Since the number of samples must be whole numbers:**
\n" ); document.write( " * x = 3938
\n" ); document.write( " * y = 4200 - 3938 = 262\r
\n" ); document.write( "\n" ); document.write( "**3. Determine the Number of Samples Reported as Containing Blueberries by Each Student:**\r
\n" ); document.write( "\n" ); document.write( "* **Student A:** 0.90x = 0.90 * 3938 = 3544.2 ≈ 3544
\n" ); document.write( "* **Student B:** 0.98x = 0.98 * 3938 = 3861.24 ≈ 3861
\n" ); document.write( "* **Student C:** (2m/100) * x = (2m/100) * 3938 = 78.76m ≈ 78.76m\r
\n" ); document.write( "\n" ); document.write( "**4. Find the Total Number of Samples Reported as Containing Blueberries by All Students:**\r
\n" ); document.write( "\n" ); document.write( "* Total = Student A + Student B + Student C
\n" ); document.write( "* Total = 3544 + 3861 + 78.76m
\n" ); document.write( "* Total = 7405 + 78.76m\r
\n" ); document.write( "\n" ); document.write( "**5. Determine the Range for Total Samples Containing Blueberries**\r
\n" ); document.write( "\n" ); document.write( "* The total number of samples reported as containing blueberries is a multiple of 5 between 8000 and 9000.
\n" ); document.write( "* Therefore:
\n" ); document.write( " * 8000 ≤ 7405 + 78.76m ≤ 9000
\n" ); document.write( " * 595 ≤ 78.76m ≤ 1595\r
\n" ); document.write( "\n" ); document.write( "**6. Find Possible Values of 'm'**\r
\n" ); document.write( "\n" ); document.write( "* 595 / 78.76 ≤ m ≤ 1595 / 78.76
\n" ); document.write( "* 7.55 ≤ m ≤ 20.23\r
\n" ); document.write( "\n" ); document.write( "* Since 'm' is a positive integer:
\n" ); document.write( " * Possible values of 'm': 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20\r
\n" ); document.write( "\n" ); document.write( "**7. Calculate the Sum of All Possible Values of 'm'**\r
\n" ); document.write( "\n" ); document.write( "* Sum = 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20
\n" ); document.write( "* Sum = 153\r
\n" ); document.write( "\n" ); document.write( "**Therefore, the sum of all possible values of 'm' is 153.**
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