Average age of company A is 21 years and average age of both companies A and B is 13 years. If the ratio of number of employees in company A and B is 3:...
A village experienced an average rainfall of 150 cm during the first five days of a week, while the last five days recorded an average of 155 cm. If the...
The mean of 15 values is 72. The mean of the first seven values is 62, and the mean of the last five values is 86. The eighth value equals 25% of the ni...
- During a week, the first six days recorded an average rainfall of 140 cm, and the last six days had an average of 148 cm. Given that the weekly average was...
- The average of 36 numbers is 75. If every number is multiplied by 9, what will be the average of the resulting numbers?
5 positive numbers are written on a piece of paper. Sum of first 3 numbers is 70 and ratio of the 4th and the 5th number is 2:3. If difference between t...
- The average score of a batsman in a number of innings is 40. He scores 88 in the next inning, raising his average by 1.6. Find the total runs scored before...
If a = 100, (a + b) = 400 and (c – b) = 80, find the average of the three numbers a, b and c.
The average weight of 12 players in a team is increased by 1/3 kg, when one of the players whose weight is 55 kg is replaced by another player. What is ...
The average mark obtained by Khushi in four papers was 51, and in the fifth paper, she obtained 56 marks. Find his new average in all five papers.
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