The correct answer is A
The average of 9 numbers is 100. The average of the first 4 numbers is 65 and the average of the last 4 numbers is 40. What is the 5th number?
The average weight of 7 men decreases by 3 kg when one of them weighing 150 kg is replaced by another person. Find the weight of the new person
X and Y have weights of 36 kg and 60 kg, respectively. Z weighs 12 kg less than X. Calculate the average weight of X, Y, and Z.
The average height of each person in group 'I' having 36 people is 18 cm less than the average height of each person in group 'J' having 30 people. If t...
What is the average of odd numbers greater than 10 but less than 30?
The average weight of a group of (x - 3) employees is (x + 4) kg. If a manager of weight 54 kg joins the office, then average weight of the group increa...
The average weight of x persons is 33 kg. The average weight of (x−16) women is 45 kg, the average weight of (x−30) children ...
The average age of A and B is 21 years. If A is to be replaced by C, the average would be 20 years. The average age of C and A is 22 years. Find the age...
Four numbers are arranged in ascending order. When the 1st two numbers are increased by the number equal to their position, and the last two numbers (i....
The average of five even numbers is 74. If we replace two of these even numbers, 84 and 96, with a single even number X, the new average decreases by 4....
