The average weight of 15 students in a class increases by 1.5 kg when one of the students weighing 40 kg is replaced by …

The average of runs scored by a cricketer in his 99 innings is 99. How many runs will he have to score to his 100th inni…

B was born when A was 4 years 7 months old and C was born when B was 3 years 4 months old. When C was 5 years 2 months o…

The sum of the three consecutive even numbers is 44 more than the average of these numbers. Which of the following is th…

Company C sells a line of 25 products with an average retail price of Rs. 1200. If none of these products sells for less…

The average age of mother and her six children is 12 years, which is reduced by 5 years if the age of mother is excluded…

What is the average of the first six (positive) odd number each of which is divisible by 7?

The average age of an adult class is 40 years. 12 new students with an average age of 32 years join the class, thereby d…