The following table shows the number of working hours and the number of employees employed in a small scale industry<…

The average of five numbers is 306.4. The average of the first two numbers is 431 and the average of the last two number…

The average age of seven boys sitting in a row facing North is 26 years. If the average age of the first three boys is 1…

When a student weighing 45 kgs left a class, the average weight of the remaining 59 students increased by 200g. What is …

A company produces on an average 4000 items per must for the first 3 months. How many items it must produce on an averag…

In a class, there are 40 boys and their average age is 16 years. One boy, aged 17 years, leaving the class and another j…

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

The frequency distribution data is given below. If the average age is 17 years, the value of m is<br> <table cl…