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The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.
  • a)
    48.55
  • b)
    42.25
  • c)
    50
  • d)
    51.25
Correct answer is option 'A'. Can you explain this answer?
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The average weight of 16 boys in a class is 50.25 kg and that of the r...
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The average weight of 16 boys in a class is 50.25 kg and that of the r...
Given:
- Average weight of 16 boys = 50.25 kg
- Average weight of remaining 8 boys = 45.15 kg

To find: Average weight of all the boys in the class

Solution:

Step 1: Find the total weight of the 16 boys
Total weight of 16 boys = Average weight of 16 boys * Number of boys
= 50.25 kg * 16
= 804 kg

Step 2: Find the total weight of the remaining 8 boys
Total weight of 8 boys = Average weight of 8 boys * Number of boys
= 45.15 kg * 8
= 361.2 kg

Step 3: Find the total weight of all the boys
Total weight of all the boys = Total weight of 16 boys + Total weight of 8 boys
= 804 kg + 361.2 kg
= 1165.2 kg

Step 4: Find the average weight of all the boys
Average weight of all the boys = Total weight of all the boys / Total number of boys
= 1165.2 kg / 24 boys
= 48.55 kg (rounded off to two decimal places)

Therefore, the average weight of all the boys in the class is 48.55 kg.

Answer: Option A (48.55)
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Community Answer
The average weight of 16 boys in a class is 50.25 kg and that of the r...
X*24=16*50.25+8*45.15 find the value of x
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