Averages

The average annual income (in Rs.) of certain agricultural workers is $S$ and that of other workers is $T$. The number of agricultural workers is $11$ times that of other workers. Then the average monthly income (in Rs.) of all the workers is:

The average age of the boys in a class is $16$ years and that of the girls is $15$ years. The average age for the whole class when there are equal number of girls and boys is:

Priya jogged for a total of $30$ minutes. Her average speed for the first $10$ minutes was $5$ miles per hour. During the last 20 minutes, she jogged $2.5$ miles. What was the average speed of her entire jog?

The average (arithmetic mean) of all the grades on a certain algebra test was $90$. If the average of the $8$ males grades was $87$, and the average of the females grades was $92$, calculate the number of female students.

In a class of $100$ students there are $70$ boys whose average marks in a subject are $75$. If the average marks of the complete class is $72$, then what is the average of the girls?

The average weight of $10$ men is decreased by $ 3 \space kg$ when one of them whose weight is $80 kg $ is replaced by a new person. The weight of the new person is

From the following data answer the question: Slices of Bread Total Utility Average Utility Marginal Utility 1 40 40 40 2 78 --- 38 3 --- --- 35 4 144 36 31 5 170 --- --- 6 --- 31.7 20 7 --- --- 13 8 --- 26 5 9 --- --- -4 Average utility at the 5th unit = _____.

The output and cost pattern of a product are given. Output(q) $0$ $1$ $2$ $3$ $4$ $5$ Total in Rs. cost(Tc) $30$ $42$ $53$ $63$ $75$ $88$ The average fixed cost of producing $3$ units is __________.

The output and cost pattern of a product are given. Output(q) $0$ $1$ $2$ $3$ $4$ $5$ Total in Rs. cost(Tc) $30$ $42$ $53$ $63$ $75$ $88$ Find the total average cost of $5$ units.

Use the following data to answer the questions: Output 0 1 2 3 4 5 6 Total Cost 240 330 410 480 540 610 660 The average fixed cost of 2 units of output is ______.