Home
Class 14
MATHS
The average of 21 data is 36 out of whic...

The average of 21 data is 36 out of which the first 12 data are having an average of 15. The average of the rest 9 data is:
21 आंकड़ों का औसत 36 है जिसमें से पहले 12 आंकड़ों का औसत 15 है | शेष 9 आंकड़ों का औसत है :

A

87

B

65

C

64

D

50

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

The average of a and b is 10, average of b and c is 12 and average of c and a is 15. Find the average of a, b and c. a तथा b का औसत 10 है, b तथा c का औसत 12 है और c तथा a का औसत 15 है | a, b और c का औसत कितना है ?

The average of 11 results is 50. If the average of the first six results is 52 and that of the last six is 49, the sixth result is- 11 परिणामों का ओसत 50 है। यदि उनमें पहले 6 परिणामों का औसत 52 हो और अंतिम 6 का 49 हो, तो छठा परिणाम कितना होगा?

The average of a, b and c is 9. The average of b and c is 10. What is the value of a? a, b तथा c का औसत 9 है | b तथा c का औसत 10 है | a का मान कितना है ?

The average of a series of 21 numbers is equal to 43. The average of the first eleven of them is 33. The average of the last eleven numbers is 53. The eleventh number of the series is: 21 संख्याओं की एक श्रृंखला का औसत 43 के बराबर है | इनमें से पहली ग्यारह संख्याओं का औसत 33 है | अंतिम ग्यारह संख्याओं का औसत 53 है | इस श्रृंखला की 11वीं संख्या है :

The average of six observations is 15. The average of first three among them is twice the average of the last three. What is the sum of the last three observations? छः: अवलोकनों का औसत 15 है | इनमें से पहले तीन का औसत अंतिम तीन के औसत से दोगुना है | अंतिम तीन अवलोकनों का योग ज्ञात करें |

The average of 10 numbers is P and the average of 4 of these numbers is Q. If the average of remaining numbers is R then which of the following is correct: 10 संख्याओं का औसत P है तथा इनमें से 4 संख्याओं का औसत Q है | यदि शेष संख्याओं का औसत R है, तो निम्न में से कौन सा विकल्प सही है?

In a set of three numbers, the average of first two numbers is 21, the average of the last two numbers is 24, and the average of the first and the last numbers is 15. What is the average of three numbers? तीन संख्याओं के सेट में, पहली दो संख्याओं का औसत 21 है, अंतिम दो संख्याओं का ओसत 24 है, ओर पहली. और अंतिम संख्या का औसत 15 है। उन तीन संख्याओं का औसत क्या हे?

The average of four numbers is 20. If the average of the first two numbers is 15, then what is the average of the last two numbers? चार संख्याओं का औसत 20 है | यदि पहली दो संख्याओं का औसत 15 है, तो अंतिम दो संख्याओं का औसत ज्ञात करें |

The average score of 30 students is 65, 36 students is 35 and 34 students is 45. The average score of all the students is : 30 छात्रों का औसत अंक 65 है, 36 छात्रों का 35 और 34 छात्रों का 45 है तो सभी छात्रों का औसत अंक है :

PINNACLE-AVERAGE-EXERCISE
  1. The average of 50 numbers is 75. If the average of first set of 25 num...

    Text Solution

    |

  2. The average weight of 38 students is 42 kg. It was found that the figu...

    Text Solution

    |

  3. The average of 21 data is 36 out of which the first 12 data are having...

    Text Solution

    |

  4. A cricket team has scored 156 runs in 30 overs. They need to score 275...

    Text Solution

    |

  5. The average weight of a group of eight people increased by 2.5 kg when...

    Text Solution

    |

  6. The cost of 6 pencils is Rs. 30 and 12 pens is Rs. 120. Find the avera...

    Text Solution

    |

  7. An art exhibition was held in the month of november. The numbers of vi...

    Text Solution

    |

  8. The owner of a bike buys petrol at the rate of Rs. 64, Rs. 80 and Rs. ...

    Text Solution

    |

  9. Average age of 12 students is 14 years. If the age of teacher is also ...

    Text Solution

    |

  10. Average of 10 numbers is 14.8. If two numbers 5 and 23 are replaced by...

    Text Solution

    |

  11. The average weight of 13 students and their teacher is 24.5 kg. If the...

    Text Solution

    |

  12. The average of a and b is 10, average of b and c is 12 and average of ...

    Text Solution

    |

  13. In an examination, the average score of students in a class who passed...

    Text Solution

    |

  14. The average of 20 numbers is 80. The average of first 10 numbers is 76...

    Text Solution

    |

  15. The ratio of boys to girls in a class is 2 : 3 and the average score o...

    Text Solution

    |

  16. Four different numbers are given here. The average of the first three ...

    Text Solution

    |

  17. The average of 21 numbers is 44. The average of first 11 numbers is 48...

    Text Solution

    |

  18. There are 90 students in a class out of which 60% are girls and the re...

    Text Solution

    |

  19. The average marks of Madhu in four subjects is 64 and she got 69 marks...

    Text Solution

    |

  20. The average of 20 observations is 27. If each observation is multiplie...

    Text Solution

    |