The mean monthly salary paid to graduating MBA class of a management institute is Rs. 16000. The mean monthly salary pai…

One-fourth of certain journey is covered at the rate of 25 km/h, one-third at the rate of 30 km/h and the rest at 50 km/…

A student obtained 60, 75 and 85 marks respectively in three monthly examinations in Physics and 95 marks in the final …

Average age of 6 sons of a family is 8 years. Average age of sons together with their parents is 22 years. If the father…

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-…

The mean of 1<sup>2</sup>, 2<sup>2</sup>, 3<sup>2</sup>, 4<sup>2</sup>, …

A school has only four classes that contain 10, 20, 30 and 40 students respectively. The pass percentage of these classe…

The average weight of a group of 75 girls was calculated as 47 kgs. It was later discovered that the weight of one of th…