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The average of 22 numbers is 52. The ave...

The average of 22 numbers is 52. The average of the first 8 numbers is 48 and the average of next 11 numbers is 54. The 20th number is 7 less than the 21st number and 21st number is 4 more than 22nd number. What is the average of the 20th and 22nd numbers?
22 संख्याओं का औसत 52 है | पहली 8 संख्याओं का औसत 48 तथा अगली 11 संख्याओं का औसत 54 है | 20वीं संख्या 21वीं संख्या से 7 कम है तथा 21वीं संख्या 22वीं संख्या से 4 अधिक है | 20वीं संख्या और 22वीं संख्या का औसत ज्ञात करें |

A

52

B

52.5

C

53

D

53.5

Text Solution

Verified by Experts

The correct Answer is:
D
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The average of 18 numbers is 52. The average of first 8 numbers is 62 and the average of the next 7 numbers is 45. If the 16th number is 6 less than the 17th number and the 17th number is one more than the 18th number then what is the average of 16th and 18th number? 18 संख्याओं का औसत 52 है | पहली 8 संख्याओं का औसत 62 तथा अगली 7 संख्याओं का औसत 45 है | यदि 16वीं संख्या 17वीं संख्या से 6 कम है तथा 17वीं संख्या 18वीं संख्या से एक अधिक है, तो 16वीं और 18वीं संख्या का औसत ज्ञात करें |

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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 11 numbers is 28. If the average of first 5 numbers is 23 and the average of next 5 numbers is 25, then find the 11th number

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KIRAN PUBLICATION-AVERAGE-TYPE-III
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