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Question

The average weight (in kg) of a family of five members whose weights are 40 kg, 49 kg, 56 kg, 74 kg and 35 kg is:

The correct answer is
50.8

Average Weight Calculation Explained

This question asks us to find the average weight of a family composed of five members. The average provides a central or typical value for a set of numbers. To calculate it, we sum all the individual values and then divide by the total number of values.

Steps to Calculate Family Average Weight

We can determine the average weight of the family by following these steps:

  1. Sum all the individual weights: First, we need to add up the weights of all five family members.

    The given weights are: 40 kg, 49 kg, 56 kg, 74 kg, and 35 kg.

    The sum of these weights is calculated as:

    Total Weight = $40 + 49 + 56 + 74 + 35$ kg

    Total Weight = $254$ kg

  2. Divide the total weight by the number of family members: The family has five members. The formula for the average weight is:

    $ \text{Average Weight} = \frac{\text{Sum of Weights}}{\text{Number of Members}} $

    Substituting the values we found:

    Average Weight = $ \frac{254 \text{ kg}}{5} $

  3. Calculate the final average: Performing the division gives us the average weight per member.

    Average Weight = $ 50.8 $ kg

Thus, the average weight of this family of five members is 50.8 kg.

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Important Questions from Average

  1. Find the mean marks of the following distribution.
    Marks obtainedNo. of students
    255
    306
    353
    401
  2. The average of first 169 even numbers is
  3. The average of first 152 odd natural numbers, is:
  4. The average runs scored by a batsman in 23 matches is 40. In the next 10 matches, the batsman scored an average of 16 runs. Find his average runs scored (rounded off to two decimals) in all the 33 matches.

  5. The sum of five numbers is 655. The average of the first two numbers is 80 and the third number is 101. Find the average of the remaining two numbers.
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