Abhijit Guha Solutions for Chapter: Average, Exercise 2: Practice Problems Level 2

A grocer has a sale of $Rs 6435, Rs. 6927, Rs. 6855, Rs. 7230$ and $Rs. 6562$ for $5$ consecutive months. How much sale must he have in the sixth month so that he gets an average sale of $Rs, 6500 ?$

Consider a class of $40$ students whose average weight is $40 kgs.$ $m$ new students join this class whose average weight is $n kgs$. If it is known that $m + n = 50,$ what is the maximum possible average weight of the class now?

The average of four consecutive odd numbers is $40$. What is the largest number?

The average score of a cricketer for ten matches is $38.9$ runs. If the average for the first six matches is $42,$then find the average for the last four matches.

The average age of all the $100$ employees in an office is $29$ years, where $\frac{2}{5}$ employees are ladies and the ratio of average age of men to women is $5:7$. The average age of female employees is

The average marks of Suresh reduced by one, when he replaced the subject in which he has scored $60$ marks less by the other two subjects in which he has scored $32$ and $36$ marks respectively. Later he has also included $57$ marks of English, then the average marks increased by two. How many subjects were there initially?

After travelling $50km,$ a train meets with an accident and travels at $(3/4)th$of the usual Speed and reaches $45$min late. Had the accident happened $10km$ further on it would have reached $35$min late. Find the usual Speed?

The average temperature of Delhi in the first four days of a month was $58°$. The average for the second, third, fourth and fifth days was $60°$. If the temperature of the first and fifth days were in the ratio $7:8$, then what is the temperature of all the fifth day.