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The average age of 11 players of a cricket team is increased by 2 months when two of them aged 18 years and 20 years are replaced by two new…

The average daily income of 7 men, 11 women and 2 boys is Rs. 257.50. If the average daily income of the men is Rs. 10 more than that of…

The average of seven numbers is 18. If one of the numbers is 17 and if it is replaced by 31, then the average becomes : A. 21.5 B. 19.5…

The average of 20 numbers is 12. The average of the first 12 numbers is 11 and that of the next 7 numbers is 10. The last number is ?…

The average weight of 12 crewmen in a boat is increased by $\Large\frac{1}{3}$ kg, when one of the crewmen whose weight is 55 kg is replaced by a new man.…

If a, b, c, d, e are five consecutive odd numbers, their average is : A. $5(a+4)$ B. $\Large\frac{\text { abcde }}{5}$ C. $5(\mathbf{a}+\mathbf{b}+\mathbf{c}+\mathbf{d}+\mathbf{e})$ D. $\mathbf{a}+\mathbf{4}$ Answer: Option D Show…

The average age of 40 students of a class is 15 years. When 10 new students are admitted, the average is increased by 0.2 year. The average age of the…

In an examination average marks obtained by the girls of a class is 85 and the average marks obtained by the boys of the same class is 87. If the…

If the difference between the average of x, y and y, z is 12, then the difference between x and z is : A. 6 B. 48 C. 24 D.…

4 boys and 3 girls spent Rs. 120 on an average, of which boys spent Rs. 150 on the average. The the average amount spent by the girls is- A.…