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Question 548470: The average (arithmetic mean) of the test scores of Mrs. Hilgarts's first period class of x Algebra 2 students is 74. The average of the test scores of Mrs. Hilgart's fifth period class of y Alegbra 2 students is 88. When the scores of both classes are combined, the average is 76. What is the vlaue of x/y?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The average (arithmetic mean) of the test scores of Mrs. Hilgarts's first period class of x Algebra 2 students is 74.
Total points = 74x
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The average of the test scores of Mrs. Hilgart's fifth period class of y Alegbra 2 students is 88.
Total points = 88y
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When the scores of both classes are combined, the average is 76. What is the value of x/y?
Total points is (x+y)76
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Equation:
points + points = total points
74x+88y = 76x+76y
2x = 12y
x/y = 6
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Cheers,
Stan H.
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