Home
Class 9
MATHS
A bag contains 5 red balls and some blue...

A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, find the number of blue balls in the bag.

A

19

B

20

C

15

D

10

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    MTG IIT JEE FOUNDATION|Exercise EXERCISE (INTEGER/NUMERICAL VALUE TYPE)|10 Videos
  • POLYNOMIALS

    MTG IIT JEE FOUNDATION|Exercise Olympiad/HOTS Corner|20 Videos
  • QUADRILATERALS

    MTG IIT JEE FOUNDATION|Exercise Olympiad/HOTS CORNER|15 Videos

Similar Questions

Explore conceptually related problems

A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball,determine the number of blue balls in the bag.

A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball from the bag is thrice that of a red ball, find the number of blue balls in the bag.

A bag contains 6 red balls and some blue balls. If the probability of drawing a blue ball from the bag is twice that of a red ball,find the number of blue balls in the bag.

A bag contains 15 white balls and some black balls. If the probability of drawing a black ball is thrice that of a white ball, find the number of black balls in the bag.

A bag contains 4 white balls and some red balls.If the probability of drawing a white ball from the bag is (2)/(5), find the number of red balls in the bag.

A bag contains black balls and some white balls. If the probability of drawing a black ball is 0.5 , then find the number of white balls in the bag. There are total 100 balls in the bag

A bag contains x red balls, (x + 5) blue balls and (3x + 10) white balls. If the probability of drawing a blue ball is 2/9 , what is the number of white balls?

There are 5 red and 4 black balls in a bag. The probability of drawing a red ball is:

In a bag there are blue and red balls.If (7)/(11) of the total balls are blue and number of blue balls is 30 more than that of red balls,find the total number of balls in the bags.

MTG IIT JEE FOUNDATION-PROBABILITY-OLYMPIAD/HOTS CORNER
  1. A bag contains 8 red and 4 green balls. One ball is selected at random...

    Text Solution

    |

  2. Two fair dice are rolled together. The probability that the difference...

    Text Solution

    |

  3. Based on the given information, find the probability of people with ag...

    Text Solution

    |

  4. Study the following statements carefully and select the correct option...

    Text Solution

    |

  5. 14 cards numbered 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 ar...

    Text Solution

    |

  6. What is the probability of having 53 Thursday in ordinary year (except...

    Text Solution

    |

  7. A fair die is thrown once. The probability of getting neither a prime ...

    Text Solution

    |

  8. A bag contains 15 balls of which x are black and remaining a re red. I...

    Text Solution

    |

  9. A box contains some black balls and 30 white balls. If the probability...

    Text Solution

    |

  10. There are 50 cards marked with the numbers 1 to 50. One card is drawn ...

    Text Solution

    |

  11. A point is selected at random from the interior of a circle. The proba...

    Text Solution

    |

  12. Aashna play a game in which two dice are thrown together. She wins if ...

    Text Solution

    |

  13. Frorn a pack of 52 playing cards all cards whose numbers are multiples...

    Text Solution

    |

  14. A die is thrown twice. The probability of the sum being odd, is

    Text Solution

    |

  15. A natural number k is chosen from the set {l, 2, 3, ... , 100). The pr...

    Text Solution

    |

  16. A card is drawn from a well shuffled pack of 52 cards. The probability...

    Text Solution

    |

  17. There are 5 red, 2 yellow and 7 white roses in a flower vase. If a ros...

    Text Solution

    |

  18. A bag contains 5 red balls and some blue balls. If the probability of ...

    Text Solution

    |

  19. Tickets numbered 1to20 are mixed up and then a ticket is drawn at rand...

    Text Solution

    |

  20. The probability that it will rain today is 0.84. What is the probabili...

    Text Solution

    |