The average weight of a group of 5 people is 60 kg. If a person weighing 75 kg joins the group, what will be the new average weight?
Question
The average weight of a group of 5 people is 60 kg.
If a person weighing 75 kg joins the group, what will be the new average weight?
Solution
Sure, here are the steps to solve the problem:
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First, find the total weight of the 5 people. Since the average weight is 60 kg, you multiply the average by the number of people: 60 kg * 5 = 300 kg.
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Then, add the weight of the new person to the total weight of the group: 300 kg + 75 kg = 375 kg.
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Finally, divide the new total weight by the new number of people to find the new average weight: 375 kg / 6 = 62.5 kg.
So, the new average weight of the group is 62.5 kg.
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