The average age of husband and his wife was 23 years at the time of their marriage. After five tears they have a one-yea…

There are five boxes in a cargo hold. The weight of the first box is 200 kg and the weight of the second box is 20% more…

There are five boxes in cargo hold. The weight of the first box is 200 kg and the weight of the second box is 20% higher…

In a cricket eleven, the average age of eleven players is 28 years. Out of these, the average age of three groups of thr…

The average age of a husband and his wife was 23 years at the times of their marriage. After five years they have a one-…

If the mean of a, b, c, is M and ab + bc + ca = 0, then the mean of a<sup>2</sup>, b<sup>2</sup>…

The average weight of 12 crewmen in a boat is increased by $$\frac{1}{3}$$ kg, when one of the crewmen whose weight is 5…

The average age of mother and her six children is 12 years, which is reduced by 5 years if the age of mother is excluded…