A fruit seller sold big, medium and small sizes apples of Rs. 15, Rs. 10 and Rs. 5, respectively. The total number of ap…

The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is ?

The average of 5 consecutive integers starting with 'm' is n. What is the average of 6 consecutive integers starting wi…

Average of 80 numbers are 42. When 5 more numbers are included, the average of 85 numbers become 45. Find the average of…

The average height of 30 boys out of a class of 50 is 160 cm. If the average height of the remaining boys is 165 cm, the…

The mean of 1<sup>2</sup>, 2<sup>2</sup>, 3<sup>2</sup>, 4<sup>2</sup>, …

The average of marks in Mathematics for 5 students was found to do 50. Later, it was discovered that in the case of one …

In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only …