Mathematics · Averages
Calculate the weighted arithmetic mean of 10, 20, and 30 for the following cases: Case (A): weights are 3, 2, and 1 respectively Case (B): weights are 1, 1, and 3 respectively Case (C): weights are 1, 2, and 3 respectively Case (D): weights are 2, 1, and 2 respectively Arrange the cases in descending order based on their calculated weighted mean values.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(C), (B), (D), (A)
- 2(B), (A), (D), (C)
- 3(B), (C), (D), (A)✓
- 4(A), (B), (C), (D)
Correct answer
(B), (C), (D), (A)
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