The meaning of 12 observations is 15. One more observation is included, and the new mean becomes 17. The 13th observation is.
- In a sports club, the ratio of the number of footballs, basketballs, and volleyballs is 3:2:4, respectively, and the average number of these items is 72. W...
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...
There are three distinct numbers ‘u’, ‘v’ and ‘w’. If, u = 240, (u + v) = 540 and (w – v) = 60, then find the average of u, v and w.
...- The average of four numbers is 58. When four more numbers are included, the average increases by 4. Find the average of the numbers included.
The average of a series of 30 numbers is 70. The difference between the largest number and the smallest number is 140. If the largest and the smallest n...
A worker completes 6 tasks at an average rate of 5 tasks per day. If he needs to complete an average of 8 tasks per day over 12 days, what should be his...
- Babar scored 135 runs which were 90% of the total team score. If there were 9 runs scored as extras, how many runs did the other players make?
The average weight of 16 people increases by 500 grams when two individuals, each with an average weight of 40 kg, are added. What is the new average we...
The average salary of a group of 60 employees is Rs. 400. If 6 employees receiving an average salary of Rs. 450 leave the group and 4 new employees rece...
