In Arun’s opinion, his weight is greater…

In Arun's opinion, his weight is greater than 65 kg but less than 72 kg. His brother does not agree with Arun and he thinks that Arun's weight is greater…

In 2011, the arithmetic mean of the annual..

In 2011, the arithmetic mean of the annual incomes of Ramesh and Suresh was Rs. 3800. The arithmetic mean of the annual incomes of Suresh and Pratap was Rs. 4800,…

The average of five different positive numbers

The average of five different positive numbers is 25. x is the decrease in the average when the smallest number among them is replaced by 0. What can be said…

The average monthly salary of 12 workers..

The average monthly salary of 12 workers and 3 managers in a factory was Rs. 600. When one of the manager whose salary was Rs. 720, was replaced with a…

Of the three numbers, the first is twice

Of the three numbers, the first is twice the second and the second is twice the third. The average of the reciprocal of the numbers is $\frac{7}{72} .$ The numbers…

In a set of three numbers, the average of first

In a set of three numbers, the average of first two numbers is 2, the average of the last two numbers is 3, and the average of the first and…

The average price of 10 books is Rs.12…

The average price of 10 books is Rs.12 while the average price of 8 of these books is Rs.11.75. Of the remaining two books, if the price of one book…

40% of the employees in a factory are workers.

40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is Rs. 390. The annual income of each executive…

The average wages of a worker during..

The average wages of a worker during a fortnight comprising 15 consecutive working days was Rs. 90 per day. During the first 7 days, his average wages was Rs. 87/day…

The average of 20 students is 12 years..

The average of 20 students is 12 years, if the teacher's age is included, average increases by one. The age of the teacher is: A. 30 years B. 33 years…