Small Quiz

3

QUESTION 1

The average weight of a group of 54 males  was calculated as 58 kg .It was later discovered  that the weight of one of the males was read as 70 kg ,whereas her actual weight was 65kg. What is the actual average weight  of the group of 54 males ? 

 

57.4

57.7

57

57.8

57.9

QUESTION 2

The average weight of 50 stduents in a class was calculated  as 42 kg .It was  later  found that the weight of two students  in the class was wrongly calculated .The actual weight of one of the  girls in the class was  38kg ,but it was calculated as 40 kg ,and the weight of another girl in the class was  55kg , whereas it was calculated as 50 kg .What is the actual average weight of the 50 students in the class?

40.06 

32.06 

42.06 

42 

41.06 

QUESTION 3

68

67

65

Data inadequate 

63

QUESTION 4

Dhoni played three matches in a tournament .The respective ratio between the scores of 1st and 2nd matches was 5 :4 and that between the scores of 2nd and 3rd  matches was 2 :1 .The difference  between the 1st and 3rd matches was 48 runs . What was the DHONI’s average score in all the three matches ? 

58(2/3)

60(2/3)

58(1/3)

61(2/3)

63(2/3)

QUESTION 5

In a certain year ,the average monthly income of ARSAD was Rs. 3400 . For the first 8 months  of the year ,his average monthly income was Rs. 3160 and for the last 5 months ,it was Rs. 4120 .His income in the 8th month of the year ?

4080

5080

5090

5060

5100

QUESTION 6

Out of three numbers , the first is twice  the second and is half  of the third .If the average of the three  numbers is  56 ,the 3RD number is:

 

89

96

106

75

77

QUESTION 7

An flight covers the four sides of square field at speeds of 200 km/hr  , 400km/hr , 600km/hr  and 800 km/hr .Then the average speed of the flight  in the entire journey is ?

389

384

854

654

125

QUESTION 8

The average salary of the entire employees  in IBT is Rs. 130 per month . The average salary of officers is Rs. 540 and that of non – officers is Rs . 114 . If the number of officers is 16 ,then find the  number of non- officers  in the office IBT

410

400

390

380

350

QUESTION 9

In a mango grove ,(x+2) trees yield  60 fruits per year per tree , x trees yield  120 fruits per year per tree  and (x-2) trees yield 180 fruits per year per tree .If the average yield per year per tree be 100 .Find the value of x ?

7

8

6

4

10

QUESTION 10

5 years ago, the average age of S, T and R was 25 year; 7 years ago the average age of T & R was 20 years. Find the present age of  S ?

39

40

36

37

38