4024/12 Oct/Nov 2023, Question 13: Mean, Median, Mode and Range
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Eight numbers have mean 12 and the first five have mean 9. Find the total of the last three numbers.
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Solution · 2 marks
- 1Total of all eight = 12 × 8 = 96
- 2Total of first five = 5 × 9 = 45
- 3Sum of remaining three = 96 − 45 = 51
Answer51
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