The average age of 10 children is 9 years 9 months. The average of 9 children is 8 years 11 months. What is the age of t…

Out of nine persons, 8 persons spent Rs. 30 each for their meals. The ninth one spent Rs. 20 more than the average expen…

Of the three numbers, the average of the first and the second is greater than the average of the second and the third by…

In Arun's opinion, his weight is greater than 65 kg but less than 72 kg. His brother does not agree with Arun and he thi…

The average monthly income of a family of four earning members was Rs. 15130. One of the daughters in the family got mar…

A, B, C and D are four consecutive even numbers respectively and their average is 65. What is the product of A and D?

A car owner buys petrol at Rs. 17, Rs. 19 and Rs. 20 per litre for three consecutive years. Compute the average cost per…

The mean weight of 100 students in a class is 46 kg. The mean weight of boys is 50 and of girls is 40 kg. Therefore, the…