Recent questions tagged average

What shall be the average waiting time per process if we know that $10$ processes (on average) arrive every second and there are normally $20$ processes in the queue?$03$...

The average marks obtained by a class in an examination were calculated as $30.8$. However, while checking the marks entered, the teacher found that the marks of one stud...

In her last basketball game, Jackie scored 36 points. These points raised the average (mean) number of points that she scored per game from 20 to 21. To raise this averag...

Consider a set of 50 samples with an average of 40:\[\text{Samples average} = 40\]If a new value of 142 is added, what is the new average?

In the month of July of a certain year, the average daily expenditure of an organization was Rs. $68$. For the first $15$ days of the month, the average daily expenditure...

It rained as much on Wednesday as on all the others days of the week combined. If the average rainfall for the whole week was $3 \mathrm{~cm}$, then how much did it rain ...

The average of $100$ numbers is $60$. Numbers $70 \& 80$ are removed What is the new average?$59.69$$50.69$$11.69$$27.27$

What is the average of numbers from $1$ to $50$ which are multiple of $2$ or $5 ?$$25.4$$25.9$$26.4$$25.8$

What is the average of first five multiples of $12$ ?$36$$38$$40$$42$

The ratio of ages of two persons $A$ and $B$ is $3:4$ and that of ages $B$ and $C$ is $4:5$. If the average of all three is $40$ years, what is $B$’s age?$20$ years$30$ y...