Question
If x + y + z = 0, then what is the value of
(3y2 + x2 + z2)/(2y2 – xz)?Solution
The average of 18 numbers is 12. If each number is increased by 2, what will be the mean of the new set of numbers?
Average of 8 numbers is 50. If average of first four and last two numbers is 40 and 35, respectively then find the fifth number given that ratio of fift...
- The average age of P, Q, R and S is 30 years and the average age of P and Q is also 30 years. If S is 8 years older than R, then find the age of R.
The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg andthat of B and C be 43 kg, then the weight of B is :
The sum of weights of 25 body builders is 2020 kg. When the weight of the referee is added, the average weight of body builders and the referee becomes ...
If average of first 11 numbers is (n – 46) and the sum of remaining number is 1850. Find the value of ‘n’, if the average of 25 numbers is ‘n’...
The average weight of a group of five persons, A, B, C, D, and E is 70 kg. If another person K joins the group then the average weight of the group is d...
The average age of 10 men is increased by 2 years when two of them whose age are 24 and 26 years replaced by two new men. The average age of the two ne...
Average marks scored by each boy in a class were 100, whereas that by each girl were 90. If the number of boys is 50% more than the number of girls, the...
The average age of (x + 2) members in a committee is 22 years. When a 44-year-old chairman joins, the average age rises to 23 years. Find x% of 500.
Relevant for Exams:
