Home
Class 14
MATHS
The average of twelve numbers is 58. The...

The average of twelve numbers is 58. The average of the first five numbers is 56 and the average of the next four numbers is 60. The `10^(th)` number is one more than the `11^(th)` number and the `11^(th)` number is one less than the `12^(th)` number. What is the average of the `10^(th)` and `12^(th)` numbers

A

58.5

B

59.5

C

59

D

58

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

The average of 13 numbers is 48.5. The average of the first five numbers is 56.4 and that of the last nine numbers is 45.6. what is the 5^(th) number ?

The average of 13 numbers is 48.5. The average of the first five numbers is 56.4 and that of the last nine numbers is 45.6. What is the 5^(th) number?

The average of five numbers is 58. The average of the first two numbers is 48.5 and the average of last two numbers is 53.5 .What is the third number?

The average of thirteen numbers is 80. The average of the first five numbers is 74.5 and that of the next five numbers is 82.5. The 11th number is 6 more than the 12th number and the 12th number is 6 less than the 13th number. What is the average of the 11th and the 13th numbers? तेरह संख्याओं का औसत 80 है | पहली पांच संख्याओं का औसत 74.5 और अगली पांच संख्याओं का औसत 82.5 है | 11वीं संख्या 12वीं संख्या से 6 अधिक है तथा 12वीं संख्या 13वीं संख्या से 6 कम है | 11वीं तथा 13वीं संख्याओं का औसत ज्ञात करें |

The average of 20 numbers is 12 . The average of the first 12 numbers is 11 and that of the next 7 numbers is 10 . The last number is

The average of thirteen numbers is 47. The average of the first three numbers is 39 and that of next seven numbers is 49. The 11^(th) number is two times the 12^(th) number and 12^(th) number is 3 less that the 13^(th) number. What is the average of 11^(th) and 13^(th) numbers ?

lf the average of 35 numbers is 22, the average of the first 17 numbers is 19. and the average of the last 17 numbers is 20, then the 18^th number is:

The average of eleven numbers is 68. The average of the first four numbers is 78 and that of the next four is 63. The 9^(th) number is two times the 11^(th) number and the 10^(th) number is half of the 11^(th) number. What is the average of the 9^(th) and 11^(th) numbers ?