Home
Class 7
MATHS
If x : y = 7 : 3, then the value of (...

If ` x : y = 7 : 3, ` then the value of ` (xy+y^(2))/(x^(2) - y^(2)) ` is:

A

` (3)/(4)`

B

` (4)/(3)`

C

` (3)/(7)`

D

` (7)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • RATIO AND PROPORTION

    S CHAND IIT JEE FOUNDATION|Exercise SELF ASSESSMENT SHEET - 15 |10 Videos

  • RATIO AND PROPORTION

    S CHAND IIT JEE FOUNDATION|Exercise SELF ASSESSMENT SHEET - 15 |10 Videos

  • PROFIT AND LOSS AND DISCOUNT

    S CHAND IIT JEE FOUNDATION|Exercise SELF ASSESSMENT SHEET |10 Videos

  • SETS

    S CHAND IIT JEE FOUNDATION|Exercise Self Assessment Sheet |10 Videos

Similar Questions

Explore conceptually related problems

If log_((x+y))(x - y) = 7 , then the value of log_((x^(2)-y^(2)))(x^(2)+2xy+y^(2)) is ______.

If x^(2) + y^(2) = 12 xy , then find the value of (x^(2))/(y^(2)) + (y^(2))/(x^(2)) .

If x:y= 3: 4, then the value of (5x - 2y)/(7x + 2y) =

If xy = 6 and x ^(2) y + xy ^(2) + x + y = 63, then the value of x ^(2) + y ^(2) is

S CHAND IIT JEE FOUNDATION-RATIO AND PROPORTION -QUESTION BANK -15
  1. Ex. 5: Three persons A, B, C whose salariestogether amount to 14,400, ...

    Text Solution

    |

  2. A pot contains 81 litres of pure milk. 1/3 of the milk is replaced by ...

    Text Solution

    |

  3. A mixture contains milk and water in the ratio 5:1. On adding 5 litres...

    Text Solution

    |

  4. If 2 kg of metal of which 1/3 is zinc and rest copper be mixed with 3 ...

    Text Solution

    |

  5. The number of employees in companies A, B and C are in the ratio 3:2: ...

    Text Solution

    |

  6. The ratio of a 2-digit number to the sum of its digits is 7: 1. If the...

    Text Solution

    |

  7. The ratio of number of boys to that of girls in a group becomes 2 :...

    Text Solution

    |

  8. A grocer buys kinds of rice X and Y, one (X) at the rate of a per kg a...

    Text Solution

    |

  9. The ratio of the first and second class train fares be tween two stati...

    Text Solution

    |

  10. Two liquids A and B are in the ratio 5:1 in container 1 and 1:3 in con...

    Text Solution

    |

  11. If a : b = 3 : 4 and b : c = 8 : 9, then a : c = ?

    Text Solution

    |

  12. If (1)/(x) : (1)/(y) : (1)/(z) = 2 : 3 : 5 then determine x : y :z

    Text Solution

    |

  13. Two numbers are in the ratio 1 1/2:2 2/3dot When each of these i...

    Text Solution

    |

  14. The total value of a collection of coins of denominations Re 1, 50-...

    Text Solution

    |

  15. A flagstaff 17.5 m high casts a shadow of length 40.25 m. 1 he heig...

    Text Solution

    |

  16. If x : y = 3: 4 , then (2x+ 3y) : (3y- 2x)= ?

    Text Solution

    |

  17. By mistake ,instead of dividing Rs.117 among A,B and C in the ratio (1...

    Text Solution

    |

  18. The students in three classes are in the ratio 2:3:5. If 40 students a...

    Text Solution

    |

  19. If x : y = 7 : 3, then the value of (xy+y^(2))/(x^(2) - y^(2)) is:

    Text Solution

    |

  20. rupes 750 is divided among A , B and C in such a manner that A : B = 5...

    Text Solution

    |