Calculate the average age of people that live in your house. How would the average change if a 90 year old grandmother lived with you? The ages of the people who live with me are 1, 7, 27, 32, 49 and my age 9. But I do not know how to show my work.
Add up the ages of the people in your home. Divide the sum by 6. That will give you the average age.
Then add 90 to the sum and divide by 7. What is this average?
just divide by 2 for all
To calculate the average age of the people who live in your house, you need to add up all the ages and divide the sum by the number of people. In this case, there are 6 people living with you (including yourself), so the calculation will be as follows:
Average age = (1 + 7 + 27 + 32 + 49 + 9) / 6
Now let's calculate the average age:
Average age = 125 / 6
Average age ≈ 20.83
Therefore, the average age of the people who currently live in your house is approximately 20.83 years old.
Now, to determine how the average age would change if you add a 90-year-old grandmother, you would need to recalculate the average age by considering her age as well.
New Average age = (1 + 7 + 27 + 32 + 49 + 9 + 90) / 7
Calculating this:
New Average age = 215 / 7
New Average age ≈ 30.71
Therefore, if a 90-year-old grandmother lives with you, the average age of the people in your house would increase to approximately 30.71 years old.