The average of 10 numbers is 50. If one number is removed, the average becomes 4
Practice Questions
Q1
The average of 10 numbers is 50. If one number is removed, the average becomes 48. What is the removed number?
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Questions & Step-by-Step Solutions
The average of 10 numbers is 50. If one number is removed, the average becomes 48. What is the removed number?
Step 1: Calculate the total of the 10 numbers using the average. Since the average is 50 and there are 10 numbers, multiply 50 by 10. This gives you 500.
Step 2: Calculate the total of the 9 numbers after one number is removed. The new average is 48, so multiply 48 by 9. This gives you 432.
Step 3: Find the removed number by subtracting the total of the 9 numbers from the total of the 10 numbers. So, subtract 432 from 500. This gives you 68.
