The mean age of a group of 100 children was 9-35 years. The mean age of 25 of them was 8 75 years and that of
another 65 was 10-51 years. What was the mean age for the remainder ?
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Mean age of remaining 10 children = [(100×10)−(25×8)−65×11] 10=8.5 years
ANSWER IS 8.5 YEARS
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Answer:8.5 years!
Step-by-step explanation:
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