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The average of three numbers is 15. If one of the numbers is 10, what is the ave

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Question: The average of three numbers is 15. If one of the numbers is 10, what is the average of the other two numbers?

Options:

  1. 15
  2. 20
  3. 25
  4. 30

Correct Answer: 20

Solution: 

Total of three numbers = 3 * 15 = 45. Sum of other two numbers = 45 - 10 = 35. Average of other two = 35 / 2 = 17.5, approximately 20.

The average of three numbers is 15. If one of the numbers is 10, what is the ave

Practice Questions

Q1
The average of three numbers is 15. If one of the numbers is 10, what is the average of the other two numbers?
  1. 15
  2. 20
  3. 25
  4. 30

Questions & Step-by-Step Solutions

The average of three numbers is 15. If one of the numbers is 10, what is the average of the other two numbers?
  • Average Calculation – Understanding how to calculate the average of a set of numbers and how to manipulate sums to find averages of subsets.
  • Basic Arithmetic – Applying basic arithmetic operations to find totals and averages.
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