Home
Class 14
MATHS
Out of four numbers, the average of the ...

Out of four numbers, the average of the first three is 15 and that of the last three is 16. If the last number is 19, the first is

A

15

B

16

C

18

D

19

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • AREA

    UPKAR PUBLICATION |Exercise QUESTION BANK |111 Videos

  • BANKER'S DISCOUNT

    UPKAR PUBLICATION |Exercise QUESTION BANK |50 Videos

Similar Questions

Explore conceptually related problems

Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 21 then the first number is: चार संख्याओं में से पहली तीन संख्याओं का औसत 16 है और अंतिम तीन संख्याओं का औसत 15 है | यदि अंतिम संख्या 21 है, तो पहली संख्या है :

Out of four numbers, the average of first three is 16 and that of the last three is 15. If, the last number is 18, the first number is:

Theere are four prime numbers written in ascending order. The product of the first three is 385 and that of the last three is 1001. The last number is :

There are four prime numbers written in ascending order. The product of the first three is 1001 and that of the last three is 2431. The last 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

UPKAR PUBLICATION -AVERAGE-QUESTION BANK
  1. The average age of a class is 40 years. 12 new students with an averag...

    Text Solution

    |

  2. The average of six observations is 12. the average decreases by 1 when...

    Text Solution

    |

  3. Out of four numbers, the average of the first three is 15 and that of ...

    Text Solution

    |

  4. The average of 10 numbers is calculated as 15 it is discovered later o...

    Text Solution

    |

  5. The average of 13 results is 68 the average of first seven is 63 and t...

    Text Solution

    |

  6. The average of 25 results is 18. The average of first twelve of them i...

    Text Solution

    |

  7. A man goes to a place at the rate of 4kmph he comes back on a bicycle ...

    Text Solution

    |

  8. The average temperature of the first three days is 27^@C and that of t...

    Text Solution

    |

  9. A ship sails out to a mark at the rate of 15kmph and sails back at the...

    Text Solution

    |

  10. The average consumption of petrol for a car for 7 months is 110 litr...

    Text Solution

    |

  11. The average age of 30 students of a class is 12 yr. The average age of...

    Text Solution

    |

  12. The average temperature of Monday Tuesday Wednesday and Thursday was 3...

    Text Solution

    |

  13. A shopkeeper earned ₹504 in 12 days his average income for the first f...

    Text Solution

    |

  14. The average of 5 consecutive numbers is n. If the next two numbers are...

    Text Solution

    |

  15. A cricketer whose bowling average is 12.4 runs per wicket takes 5 w...

    Text Solution

    |

  16. The average weight of 3 men A, B and C is 84 kg. Another man D joins t...

    Text Solution

    |

  17. There are 35 students in a hostel. If the number of students increases...

    Text Solution

    |

  18. A cricket batsman had a certain average of runs for his 11 innings. In...

    Text Solution

    |

  19. The average age of a husband and wife was 23 years when they were marr...

    Text Solution

    |

  20. Ten years ago the average age of a family of 4 members was 24 years tw...

    Text Solution

    |