The average of 20 numbers is 40. If the sum of the first 10 numbers is 380, what is the average of the remaining 10 numbers?
42
Sum of all 20 numbers = \(20 \times 40 = 800\).
Sum of the remaining 10 numbers = \(800 - 380 = 420\).
Average of the remaining 10 numbers = \(\frac{420}{10} = 42\).
Hence, the average of the remaining 10 numbers is 42.
The sum of the first 10 numbers is 380, and the average of 20 numbers is 40. What is the average of the remaining 10 numbers?
Average of 40 numbers is 71, if the number 100 replaced by 140, then average is increased by
The captain of a football team of 11 members is 28 years old and the goalkeeper is 4 years older than him. If the ages of these two are removed, then the average age of the remaining players is two years less than the average age of the whole team. What is the average age of the team?
There are two Classes A and B having 25 and 30 students respectively. In Class-A the highest score is 21 and lowest score is 17. In Class-B the highest score is 30 and lowest score is 22. Four students are shifted from Class-A to Class-B.
Consider the following statements:
1. The average score of Class-B will definitely decrease.
2. The average score of Class-A will definitely increase.
Which of the above statements is/are correct?
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A cow costs more than 4 goats but less than 5 goats. If a goat costs between Rs. 600 and Rs. 800, which of the following is a most valid conclusion?