The average age of 30 boys in a class in 15 years. One boy, aged 20 years, left
The average age of 30 boys in a class in 15 years. One boy, aged 20 years, left the class, but two new boys…
The average of 8 numbers is 20. The average of first two numbers is 15(1)/(2) an
The average of 8 numbers is 20. The average of first two numbers is 15(1)/(2) and that of the next three is 21(1)/(3). If…
The average age of a class of 39 students is 15 years. If the age of the teacher
The average age of a class of 39 students is 15 years. If the age of the teacher is included, then the average increases…
The mean of 9 observation is 16. One more observation is included and the new me
The mean of 9 observation is 16. One more observation is included and the new mean becomes 17. The 10 th observation is :
The average of all the odd integers between 2 an 22 is ?
The average of all the odd integers between 2 an 22 is ?
The average weight of first 11 persons among 12 persons is 95 kg. The weight of
The average weight of first 11 persons among 12 persons is 95 kg. The weight of 12 th person is 33 kg more than…
The average weight of five persons sitting in a boat is 38 kg. The average weigh
The average weight of five persons sitting in a boat is 38 kg. The average weight of the boat and the persons sitting in…
In the afternoon, a student read 100 pages at the rate of 60 pages per hour. In
In the afternoon, a student read 100 pages at the rate of 60 pages per hour. In the evening, when she was tired, she…
The average expenditure of a man for the first five months Rs. 1200 and for the
The average expenditure of a man for the first five months Rs. 1200 and for the next seven months is Rs. 1300. If he…
If the average marks of three batches of 55, 60 and 45 students respectively is
If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55 and 60, then the average marks of…
The average age of mother and her six children is 12 years, which is reduced by
The average age of mother and her six children is 12 years, which is reduced by 5 years if the age of mother is…
Find the average of cubes of first 49 positive integers.
Find the average of cubes of first 49 positive integers.