Mean weight of $4$ boys is $50$ kg and mean weight of $6$ girls is $40$ kg. Mean weight of all $10$ children…

Mean weight of $4$ boys is $50$ kg and mean weight of $6$ girls is $40$ kg. Mean weight of all $10$ children is:
  1. $42$ kg
  2. $44$ kg
  3. $45$ kg
  4. $46$ kg

Solution

Total weight $= 4\times 50 + 6\times 40 = 200+240 = 440$. Mean $= \dfrac{440}{10} = 44$ kg.

Asked in: IMO

Practice more DATA HANDLING questions on Aicharya