Home
Class 14
MATHS
The average of twelve numbers is 42. The...

The average of twelve numbers is 42. The average of the last five numbers is 40 and that of the first four numbers is 44. The 6th number is 6 less than the fifth and 5 less than the 7th number. The average of the 5th and the 7th numbers is:

A

47.5

B

50

C

44.5

D

39

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

The average of twelve numbers is 39. The average of the last five number is 35, and that of the first four numbers is 40, The fifth number is 6 less than the sixth number and 5 more than the seventh number . The average of the fifth and sixth number is :

The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then, the sixth number is

The average of 24 numbers is 26. The average of the first 15 numbers is 23 and that of the last 8 number is 33. Find the 16^(th) number.

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 twelve numbers is 46. The average of the first four numbers is 43 and that of the last five numbers is 49.4. The 5th and the 6th numbers are respectively 4 and 6 more than the 7th number. What is the average of the 5th and the 7th numbers? बारह संख्याओं का औसत 46 है | पहली चार संख्याओं का औसत 43 तथा अंतिम पांच संख्याओं का औसत 49.4 है | 5वीं और छठी संख्या सातवीं संख्या से क्रमशः 4 और 6 अधिक है | 5वीं और 7 वीं संख्या का औसत ज्ञात करें |

The average of twelve numbers is 45.5. The average of the first four numbers is 41.5 and that of the next five numbers is 48. The 10th number is 4 more than the 11th number and 9 more than the 12th number. What is the average of the 10th and 12th numbers? बारह संख्याओं का औसत 45.5 है | पहली चार संख्याओं का औसत 41.5 है तथा अगली पाँच संख्याओं का औसत 48 है | 10वीं संख्या, 11वीं संख्या से 4 अधिक तथा 12वीं संख्या से 9 अधिक है | 10वीं तथा 12वीं संख्याओं का औसत कितना है ?

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 ?