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Q 1.

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 is Rs. 420. What is the average annual income of all the employees in the factory together ?

Q 2.

A passenger travels from Delhi to Meerut at a speed of 30 kmph and return with a speed of 60 kmph. What is the average speed ?

Q 3.

There are three categories of jobs A, B and C. The average salary of the student who got the job of A and B categories is 26 lakh per annum. The average salary of the students who got the job of B and C category is 44 lakh per annum and the average salary of those students who got the job of A and C categories is 34 lakh per annum. The most appropriate (or closet) range of average salary of all the three categories (if it is known that each student gets only one category of jobs i.e. , A, B and C) ?

Q 4.

A man started his journey from Lucknow to Kolkata, which is 200 km, at the speed of 40 kmph then he went to Banglore which is 300 km, at the speed of 20 kmph. Further he went to Ahmedabad which is 500 km, at the speed of 10 kmph. The average speed of the man is ?

Q 5.

A man has ‘n’ magical eggs whose average weight is ‘k’ gm. Each of the ‘n’ eggs produces ‘n’ eggs next day such that the average weight of ‘n’ eggs produced is same as that of the parental egg for each ‘n’ groups individually i.e. each egg produces ‘n’ eggs of next generation and average weight of all the ‘n’ eggs of next generation is same as the weight of the mother egg. This process is continued without any change in pattern. What is the total weight of all the eggs of r^{th}Â generation, where the initial number of eggs with man are considered as the eggs of first generation

Q 6.

One-fourth of certain journey is covered at the rate of 25 km/h, one-third at the rate of 30 km/h and the rest at 50 km/h. Find the average speed for the whole journey

Q 7.

The average marks of four subjects is 120. If 33 was misread as 13 during the calculation, what will be the correct average ?

Q 8.

Which one of the following numbers can be removed from the set S = {0, 2, 4, 5, 9} without changing the average of set S ?

Q 9.

The average age of a family of 5 members is 20 years. If the age of the youngest member be 10 years then what was the average age of the family at the time of the birth of the youngest member ?

Q 10.

The difference between two angles of a triangle is 24^{o}. The average of the same two angles is 54^{o}. Which one of the following is the value of the greatest angle of the triangle ?