A group of friends has an average age of 25 years. If one friend aged 30 leaves

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What’s inside this PDF?

Question: A group of friends has an average age of 25 years. If one friend aged 30 leaves the group, what will be the new average age if the group originally had 5 members?

Options:

Correct Answer: 24

Solution:

Total age = 25 * 5 = 125. New total age = 125 - 30 = 95. New average = 95 / 4 = 23.75.

A group of friends has an average age of 25 years. If one friend aged 30 leaves

Practice Questions

A group of friends has an average age of 25 years. If one friend aged 30 leaves the group, what will be the new average age if the group originally had 5 members?

Questions & Step-by-Step Solutions

A group of friends has an average age of 25 years. If one friend aged 30 leaves the group, what will be the new average age if the group originally had 5 members?

Step 1: Calculate the total age of the group. Since the average age is 25 and there are 5 members, multiply 25 by 5. Total age = 25 * 5 = 125.
Step 2: One friend aged 30 leaves the group. Subtract this friend's age from the total age. New total age = 125 - 30 = 95.
Step 3: Now, there are 4 members left in the group (5 - 1 = 4).
Step 4: To find the new average age, divide the new total age by the number of remaining members. New average = 95 / 4.
Step 5: Calculate 95 divided by 4, which equals 23.75.

Average Calculation – Understanding how to calculate the average age based on total age and number of members.
Impact of Removing a Member – Analyzing how the removal of a member affects the total age and subsequently the average age.

A group of friends has an average age of 25 years. If one friend aged 30 leaves

What’s inside this PDF?

A group of friends has an average age of 25 years. If one friend aged 30 leaves

Practice Questions

Questions & Step-by-Step Solutions

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