A group of friends has an average age of 25 years. If one friend who is 30 years

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Question: A group of friends has an average age of 25 years. If one friend who is 30 years old leaves the group, what will be the new average age if there were originally 5 friends?

Options:

Correct Answer: 24

Solution:

Total age of 5 friends = 5 * 25 = 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 who is 30 years

Practice Questions

A group of friends has an average age of 25 years. If one friend who is 30 years old leaves the group, what will be the new average age if there were originally 5 friends?

Questions & Step-by-Step Solutions

A group of friends has an average age of 25 years. If one friend who is 30 years old leaves the group, what will be the new average age if there were originally 5 friends?

Step 1: Calculate the total age of the 5 friends. Since the average age is 25 years, multiply 25 by 5 (the number of friends). This gives you 125 years.
Step 2: One friend who is 30 years old leaves the group. Subtract 30 from the total age calculated in Step 1. So, 125 - 30 equals 95 years.
Step 3: Now, there are 4 friends left in the group (5 original friends - 1 friend who left).
Step 4: To find the new average age, divide the new total age (95 years) by the number of friends left (4). So, 95 divided by 4 equals 23.75.

Average Calculation – Understanding how to calculate the average age based on total age and number of individuals.
Impact of Removing an Individual – Recognizing how the removal of an individual affects the total age and subsequently the average.

A group of friends has an average age of 25 years. If one friend who is 30 years

What’s inside this PDF?

A group of friends has an average age of 25 years. If one friend who is 30 years

Practice Questions

Questions & Step-by-Step Solutions

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