A man bought 13 articles at Rs. 70 each, 15 at Rs. 60 each and 12 at Rs. 65 each. The average price per article is -

The average weight of boys in a class is 30 kg and the average weight of girls in the same class is 20 kg. If the averag…

The average of the three numbers x, y and z is 45. x is greater than the average of y and z by 9. The average of y and z…

The average of 5 consecutive integers starting with 'm' is n. What is the average of 6 consecutive integers starting wi…

The mean of 100 items was 46. Later on it was discovered that an item 16 was misread as 61 and another item 43 was misre…

In a group of 120 people, one-fifth are men, one-fourth are women and the rest children. The average age of women is fiv…

The mean monthly salary paid to 75 workers in a factory is Rs. 5680. The mean salary of 25 of them is Rs. 5400 and that …

The average of 6 observations is 45.5. If one new observation is added to the previous observations, then the new averag…