Home
Class 7
MATHS
If 2x=3y\ a n d\ 4y=5z , then x : z= (a)...

If `2x=3y\ a n d\ 4y=5z ,` then `x : z=` (a) `4:3` (b) `8: 15` (c) `3:4` (d) `15 :8`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    RD SHARMA|Exercise All Questions|144 Videos

  • RATIONAL NUMBERS

    RD SHARMA|Exercise All Questions|105 Videos

Similar Questions

Explore conceptually related problems

If x:y=2:3 and y:z=2:3, then x:z=2:3(b)3:4(c)5:7 (d) 4:9

If 2x+y=5 and 3x-4y=2, then the value of 2xy is (a) 4 (b) 6 (c) 8 (d) 10

If 2x+y=17;y+2z=15 and x+y=9 then what is the value of 4x+3y+z?(a)41 (b) 43(c)45 (d) 55 (e) None of these

If 3x-4y+z=7; 2x-z+3y=19 ; x+2y+2z=24 , then what is the value of z ? (a) 4 (b) 5 (c) 6 (d) 8

In Figure,if (y)/(x)=5 and (z)/(x)=4, then the value of x is 8^(0)( b) 18^(0)(c)12^(0) (d) 15^(0)

If x/((2x+y+z))=y/((x+2y+z))=z/((x+y+2z))=a , then find a if x+y+z!=0 . (a)1/3 (b) 1/4 (c) 1/2 (d) 1/8

If 2x+3y=31,backslash backslash y-z=4 and x+2z=11, then what is the value of x+y+z?( a )12 (b) 13 (c) 15 (d) 16

The number of solutions of the system of equations: 2x+y-z=7,\ \ x-3y+2z=1,\ \ x+4y-3z=5 is (a) 3 (b) 2 (c) 1 (d) 0

If theta is the angel between the planes 2x-y+z-1=0 and x-2y+z+2=0 then costheta= (A) 2/3 (B) 3/4 (C) 4/5 (D) 5/6

If (3)/(2x)+(4)/(3y)=(3)/(5z), then z will be

RD SHARMA-RATIO AND PROPORTION-All Questions
  1. If p : q=2:5, then (25 p+14 q)/(5p+7q)= (a)8:5 (b) 5:8 (c) 8:3 (d) ...

    Text Solution

    |

  2. A ratio equivalent to 2:5 is (a)6: 15 (b) 4:5 (c) 5:2 (d) 5:4

    Text Solution

    |

  3. If 2a=3b=4c , then a : b : c= (a)2:3:4 (b) 3:4:6 (c)4:3:2 (d) 6:4:...

    Text Solution

    |

  4. If 2x=3y\ a n d\ 4y=5z , then x : z= (a) 4:3 (b) 8: 15 (c) 3:4 (d) 1...

    Text Solution

    |

  5. If a/2=b/3=c/4, then a : b : c= (a) 2:3:4 (b) 4:3:2 (c) 3:2:4 (d) No...

    Text Solution

    |

  6. If 1/a :1/b :1/c=3:4:5, then a : b : c (a) 5:4:3 (b) 20 : 15 : 12 (c)...

    Text Solution

    |

  7. If a : b=5:7\ a n d\ b : c=6: 11 , then a : b : c= (a) 35 : 49 : 66 (...

    Text Solution

    |

  8. If x : y=1:1,\ t h e n\ (3x+4y)/(5x+6y)= (a) 7/(11) (b) (17)/(11) (c)...

    Text Solution

    |

  9. If a : b=2:5, then (3a+2b)/(4a+b)= (a) (16)/(13) (b) (13)/(16) (c) (2...

    Text Solution

    |

  10. The mean proportional of a\ a n d\ b is 10 and the value of a is four ...

    Text Solution

    |

  11. If 8: x :: 16 : 35 (a) 35 (b) 70 (c)(35)/2 (d) 24

    Text Solution

    |

  12. The mean proportional of 6 and 24 is (a)15                          ...

    Text Solution

    |

  13. The boys and girls in a school are in the ratio 9: 5. If the number ...

    Text Solution

    |

  14. If the first three terms of a proportion are 3,5 and 21 respectively...

    Text Solution

    |

  15. What must be added to each term of the ratio 9: 16 to make the ratio...

    Text Solution

    |

  16. What least number is to be subtracted from each term of the ratio 15...

    Text Solution

    |

  17. If Rs 840 is divided between P\ a n d\ Q in the ratio 3:4, then P ' ...

    Text Solution

    |

  18. The ages of Ravish and Shikha are in the ratio 3: 8. Six years hence...

    Text Solution

    |

  19. The present ages of Renu and Ravi are in the ratio 5: 6. The sum of ...

    Text Solution

    |

  20. The third proportional of 3 and 27 is (a) 243 (b) 256 (c) 289 (d) ...

    Text Solution

    |