Home
Class 14
MATHS
The average of 20 numbers is 15 and the ...

The average of 20 numbers is 15 and the average of first five is 12.The average of the rest is

A

16

B

15

C

14

D

13

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PRACTICE SET-5

    UPKAR PUBLICATION |Exercise PART-III (QUANTITIVE QPTITUDE)|50 Videos
  • PRACTICE SET-8

    UPKAR PUBLICATION |Exercise PART-III QUANTITATIVE APTITUDE |39 Videos

Similar Questions

Explore conceptually related problems

The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest? (a) 15 (b) 15 1/5 (c) 14 (d) 14 1/5

The average of 9 numbers is 18. If the average of first five numbers is 19 and the average of last 5 numbers is 17, find the 5th number.

The average of 21 numbers is 12. The average of the first 11 numbers is 9 and the average of the last 11 numbers is 15. What is the value of the middle 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

UPKAR PUBLICATION -PRACTICE SET-7-PART-III (QUANTITATIVE APTITUDE)
  1. If a, b. c, d, e are five consecutive odd numbers, their average is:

    Text Solution

    |

  2. The average of 20 numbers is 15 and the average of first five is 12.Th...

    Text Solution

    |

  3. A tradesman sold an article at a loss of 20%. If the selling price had...

    Text Solution

    |

  4. The price of an article is first decreased by 20% and then increased b...

    Text Solution

    |

  5. A man covers (2)/(15) of the total journey by train, (9)/(20) by bus a...

    Text Solution

    |

  6. By walking at (3)/(4) of his usual speed, a man reaches his office 20 ...

    Text Solution

    |

  7. If the compound interest on a certain sum for two years at 12% per ann...

    Text Solution

    |

  8. The total cost of 8 buckets and 5 mugs is Rs. 92 and the total cost of...

    Text Solution

    |

  9. IF (a )/( 1 - a) + (b)/( 1 - b) + (c)/(1 - c) = 1 then the value of ...

    Text Solution

    |

  10. If (x-3)^(2) + (y-5)^(2) + (z-4)^(2) =0, then the value of (x^2)/(9) +...

    Text Solution

    |

  11. If (4x)/( 3) + 2P = 12 for what vale of P, x = 6 ?

    Text Solution

    |

  12. The value of (4+3sqrt(3))/(7+4 sqrt(3)) is

    Text Solution

    |

  13. If x (3- (2)/(x)) = (3)/(x) then the value of x ^(2) + (1)/(x ^(2)) w...

    Text Solution

    |

  14. What number must be added to the expression 16a^(2)-12a to make it a p...

    Text Solution

    |

  15. The straight line 4x + 3y =12 passes through-

    Text Solution

    |

  16. The sum of three altitudes of a triangle is

    Text Solution

    |

  17. In Delta ABC, angle A + angle B= 65^@ , angle B + angle C = 140^@ the...

    Text Solution

    |

  18. The length of the tangent drawn to a circle of radius 4 cm from a poin...

    Text Solution

    |

  19. A cyclic quadrailatral ABCD is such that AB=BC, AD=Dc AC | BD, angle C...

    Text Solution

    |

  20. The height of an equilatral triangle is 15 cm . The area of the triang...

    Text Solution

    |