Race Institute

#38, Burkit Road,

Opposite to bus terminal,

Thyagaraya Nagar

Chennai - 600 017.

Phone:

044-64563030

044-42660776

Mobile:

9043303030

Contact Person:

Bharath Seeman

Average

 

1.The average of the even numbers from 1 to 30 is: [SSC Grad. 2008]

A. 15

B. 17

C. 19

D. 16

2.Find the average of prime numbers between1 to 35?

A. 14.545

B. 13.545

C. 12.545

D. none of these

3.QUESTION BASED ON PARTIAL AVERAGES

The average weight of a group of 150 students in a class is 60 kg. If the mean of weights of all the 50 male students in the class is 70 kg, then the average weight of 100 girls in the class is: [CDS 2001]

A. 65 kg

B. 50 kg

C. 60kg

D. 55kg

4.The average of 9 numbers is 30. The average of first 5 numbers is 25 and that of the last 3 numbers is 35. What is the 6th number?[SSC Grad. 2000]

A. 20

B. 30

C. 40

D. 50

5.QUESTION BASED ON REPLACEMENT/WITHOUT REPLACEMENT

There are 50 students in the class room. Average weight of the 50 students is 50kg. If 5 students are getting admission the average weight is decreased by 0.5kg. Find the average weight of students in the class?

The average age of 20 students in the class is 17 years.

A. 40.5

B. 42.5

C. 44.5

D. 45

6.If 10 students are discontinued then the average age decreased by 1 year, then find the average age of discontinued students in years?"

A. 17

B. 18

C. 19

D. 20

7.QUESTION BASED ON AVERAGE SPEED

A motor travels to a place 150km away at an average of 60km/h and returns at 30km/h. His average speed of the whole journey in km/h is.

A. 40km/h

B. 80kmp/h

C. 70km/h

D. 80km/h

8.In a journey of 160 km, a train covers the distance 120 km at a speed of 80 km/hr and the remaining distance at 40km/hr. The average speed of the train for the whole journey is: [Bank 2007]

A. 60 km/h

B. 64 km/h

C. 68 km/h

D. 72 km/h

9.QUESTION BASED ON CRICKET

In 1997 World cup Indian team scored 250 runs in 10 matches. After the 11th match Indian team average score increased by 2 runs, find the last match (11th match) score?

A. 252

B. 232

C. 272

D. 282

10.The average of the runs of a cricketer of 10 innings was 42. How many runs he needs to take in the new innings to increase the average by 4 runs?

A. 86

B. 87

C. 91

D. 92

11.The average of the even numbers from 1 to 30 is: [SSC Grad. 2008]

A. 15

B. 17

C. 19

D. 16

12.Find the average of prime numbers between1 to 35?

A. 14.545

B. 13.545

C. 12.545

D. none of these

13.QUESTION BASED ON PARTIAL AVERAGES

The average weight of a group of 150 students in a class is 60 kg. If the mean of weights of all the 50 male students in the class is 70 kg, then the average weight of 100 girls in the class is: [CDS 2001]

"

A. 65 kg

B. 50 kg

C. 60kg

D. 55kg

14.The average of 9 numbers is 30. The average of first 5 numbers is 25 and that of the last 3 numbers is 35. What is the 6th number?[SSC Grad. 2000]

A. 20

B. 30

C. 40

D. 50

15.QUESTION BASED ON REPLACEMENT/WITHOUT REPLACEMENT

There are 50 students in the class room. Average weight of the 50 students is 50kg. If 5 students are getting admission the average weight is decreased by 0.5kg. Find the average weight of students in the class?

A. 40.5

B. 42.5

C. 44.5

D. 45

16.The average age of 20 students in the class is 17 years. If 10 students are discontinued then the average age decreased by 1 year, then find the average age of discontinued students in years?"

A. 17

B. 18

C. 19

D. 20

17.QUESTION BASED ON AVERAGE SPEED

A motor travels to a place 150km away at an average of 60km/h and returns at 30km/h. His average speed of the whole journey in km/h is."

A. 40km/h

B. 80kmp/h

C. 70km/h

D. 80km/h

18.In a journey of 160 km, a train covers the distance 120 km at a speed of 80 km/hr and the remaining distance at 40km/hr. The average speed of the train for the whole journey is: [Bank 2007]"

A. 60 km/h

B. 64 km/h

C. 68 km/h

D. 72 km/h

19.QUESTION BASED ON CRICKET

In 1997 World cup Indian team scored 250 runs in 10 matches. After the 11th match Indian team average score increased by 2 runs, find the last match (11th match) score?"

A. 252

B. 232

C. 272

D. 282

20.The average of the runs of a cricketer of 10 innings was 42. How many runs he needs to take in the new innings to increase the average by 4 runs?

A. 86

B. 87

C. 91

D. 92