The average of n numbers is 66. If each of 54% of the numbers is increased by 13 and each of the remaining numbers is decreased by 12, then the n...
The average age of 32 children and their teacher's age are 28 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
A player’s average score in first 10 games was a certain number. In the next 10 games, his average score was 90, due to which his overall average incr...
When the average age of a husband and wife and their son was 44 years, the son got married and a child was born just one year after their marriage. When...
The average of the first and second numbers is 45, while the average of the second and third numbers is 55. If the sum of the first and third numbers is...
A cricketer had a batting average of x runs in the first 18 matches. In the next 6 matches, he scored an average of 60 runs. His overall average increas...
- The average age of P, Q, R and S is 30 years and the average age of P and Q is also 30 years. If S is 8 years older than R, then find the age of R.
What is the average of odd numbers greater than 10 but less than 30?
In an examination, the average marks obtained by the students is 80. After correcting the quantitative mistakes, the average of 90 students is reduced t...
The average cost of two chairs is Rs.10000. The average cost decrease by 20% when one more chair is included. What is the cost price of the 3rd
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