The average of 11 observations is 60. If the average of first five observations is 58 and that of last five is 56, the sixth observation is
The average of five even numbers is 62. If we replace two of these even numbers, 84 and 92, with a single even number X, the new average decreases by 4....
- What is the average of the squares of the first 17 natural numbers?
The average age of 6 sisters is 30 yr. If the age of the youngest sister be 5 yr. What was the average age of the group of sister just before the birth ...
Out of 4 numbers, the average of first 3 is 19 and last 3 is 20. If the last number is 21. Find the first number?
The average weight of 4 persons is 33 kg. The heaviest person’s weight is 30 kg more than the lightest person’s weight. If the average weight of the...
The average salary of 35 employees in a company was calculated to be ₹42,000. Later it was found that ₹45,000 was entered as ₹54,000, and ₹39,00...
The average age of three children is 32 years. If their ages are in the ratio 3:6:7. Find the age of the youngest child.
In a classroom, the combined average age of all students and their teacher is 17 years. The average age of the boys in the class is 13 years. If the tea...
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...
