The average of 13 results is 68. The average of first seven is 63 and that of the last seven is 70, the seventh result is:
47
Therefore, if we add the sum of the first seven results and the sum of the last seven results, the seventh result gets counted twice. The calculation shows that the value of the seventh result is 47.
Similar Questions
The average of 308, 125, 45, 120 and 102 is
The average of 5 results is 46 said that of the first four is 45. The fifth result is
The average of 7 consecutive numbers is 20. The largest of these numbers is:
The average age of four players is 18.5 years. If the age of the coach is also included, the average age increases by 20%. The age of the coach is:
The average of all prime numbers between 60 to 80 is:
Important Questions from Average
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?
The average weight of A, B, Cis 40 kg, the average weight of B, D, Eis 42 kg and the weight of Fis equal to that of B. What is the average weight of A, B, C, D, Eand F?
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?
