Home
Class 14
MATHS
The average score of boys in an examinat...

The average score of boys in an examination of a school is 71 and that of the girls is 73. The average score of the whole school in that examination is 71.8. Find the ratio of the number of boys to the number of girls that appeared in the examination.

A

`4 : 5`

B

` 3 : 2`

C

` 3 : 5`

D

` 5 : 2`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • RATIO,PROPORTION AND VARIATION

    DISHA PUBLICATION|Exercise Practice Exercises ( Standard Level)|26 Videos
  • RATIO,PROPORTION AND VARIATION

    DISHA PUBLICATION|Exercise Practice Exercises (Expert Level)|12 Videos
  • RATIO,PROPORTION AND VARIATION

    DISHA PUBLICATION|Exercise Test Yourself|15 Videos
  • QUADRATIC AND CUBIC EQUATIONS

    DISHA PUBLICATION|Exercise Test Yourself |15 Videos
  • SET THEORY

    DISHA PUBLICATION|Exercise Test Yourself|15 Videos
DISHA PUBLICATION-RATIO,PROPORTION AND VARIATION-Practice Exercises (Foundation Level)
  1. If (p)/( q - r) = (p + q)/( r) = (q)/( p), Then find q : p : r

    Text Solution

    |

  2. Salaries of A, B and C were in the ratio 3 : 5 : 7, respectively. If t...

    Text Solution

    |

  3. The average score of boys in an examination of a school is 71 and that...

    Text Solution

    |

  4. There are two mixtures of honey and water, the quantity of honey in th...

    Text Solution

    |

  5. What amounts (in litres) of 90% and 97% pure acid solutions are mixed ...

    Text Solution

    |

  6. Arvind began a business with 550 and was joined afterwards by Brij wit...

    Text Solution

    |

  7. A, B and C are partners. A receives 9/10 of the profit and B and C sha...

    Text Solution

    |

  8. A fort had provision of food for 150 men for 45 days. After 10 days, 2...

    Text Solution

    |

  9. In a mixture of 45 L, the ratio of milk and water is 2 : 1. If this ra...

    Text Solution

    |

  10. If 40% of a number is equal to two-third of another number, what is th...

    Text Solution

    |

  11. If the cost of printing a book of 320 leaves with 21 lines on each pag...

    Text Solution

    |

  12. A and B entered into a partnership with investments of 15000 and 40000...

    Text Solution

    |

  13. The third proportional to (x^(2) - y^(2)) and (x-y) is :

    Text Solution

    |

  14. The sides of a triangle are in the ratio (1)/(2) : (1)/(3) : (1)/(4) a...

    Text Solution

    |

  15. Three friends A, B and C invested money in a business in the ratio 5:7...

    Text Solution

    |

  16. The numbers of students speaking English and Hindi are in the ratio of...

    Text Solution

    |

  17. The ratio of males and females in a city is 7 : 8 and the percentage o...

    Text Solution

    |

  18. A, B and C started a business with a total investment of '72000. A inv...

    Text Solution

    |

  19. A and B start a business with investments of Rs. 5000 and Rs. 4500 res...

    Text Solution

    |

  20. A, B and C enter into a partnership. They invest Rs. 40000, Rs. 800...

    Text Solution

    |