Question

The average weight of 16 boys in a class is 50.25 kgs and that of the remaining 8 boys is 45.15 kgs. Find the average weight of all the boys in the class?

• A. 48.55 kgs
• B. 48 kgs
• C. 47.55 kgs
• D. 49.25 kgs
• E. 50.25 kgs

Hint:

Average of combined groups = (sum of all values) / (total number of items).

Answer 1

The Correct Option is A

Step 1: Total weight of first 16 boys = $16 \times 50.25 = 804$ kg.
Step 2: Total weight of remaining 8 boys = $8 \times 45.15 = 361.2$ kg.
Step 3: Total weight of all 24 boys = $804 + 361.2 = 1165.2$ kg.
Step 4: Average weight = $\frac{1165.2}{24} = 48.55$ kg.
Step 5: Final Answer: 48.55 kgs.