Question
Download Solution PDFThe average weight of 20 persons is 60 kg and that of the remaining 10 persons is 55 kg. Find the average weight of all the persons.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The average weight of 20 persons is 60 kg and that of the remaining 10 persons is 55 kg.
Formula used:
Average weight of all persons = (Total weight of all persons) / (Total number of persons)
Calculation:
Total weight of 20 persons = 20 × 60 = 1200 kg
Total weight of 10 persons = 10 × 55 = 550 kg
Total weight of all persons = 1200 + 550 = 1750 kg
Total number of persons = 20 + 10 = 30
⇒ Average weight of all persons = 1750 / 30 = 58.33 kg
∴ The correct answer is option 1.
Last updated on Mar 19, 2025
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