Home
Class 8
MATHS
In P=(5x+2y)/(3x-4y), if x=5 and P=7, th...

In `P=(5x+2y)/(3x-4y)`, if x=5 and P=7, the y=?

A

3

B

`(3)/(8)`

C

`(8)/(3)`

D

`(1)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
(i) Make y as the subject and evaluate it.
(ii) first make y as the subject and then substitute the given values.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • Formulae

    PEARSON IIT JEE FOUNDATION|Exercise Level 2|21 Videos

  • GEOMETRY

    PEARSON IIT JEE FOUNDATION|Exercise CONCEPT APPLICATION (Level 1)|60 Videos

Similar Questions

Explore conceptually related problems

5) 3x-4y=-7;5x-2y=0 find x and y

(i) x+2y=-7 and 3x-2y=-1, then find the value of x. (ii) If x+y=8 and 4y-x=2, then find the value of y. (iii) If 3x+5y=9 and 5x+3y=7, then find the value of x+y. (iv) If 3x-y=11 and x-3y=17, then find the value of x-y.

Knowledge Check

  • In P= (5x+2y)/(3x-4y) , if x= 5 and P=7 , then y= ___________

    A
    3
    B
    ` (3)/(8)`
    C
    ` (8)/(3)`
    D
    ` (1)/(3)`

  • The maximum value of p for which the lines 3x-4y=2, 3x-4y=12, 12x+5y=7 and 12x+5y=p constitute the sides of a rhombous is

    A
    33
    B
    19
    C
    `-19`
    D
    9

  • The minimum value of p for which the lines 3x-4y=2, 3x-4y=12, 12x+5y=7 and 12x+5y=p constitute the sides of a rhombus is

    A
    33
    B
    19
    C
    `-19`
    D
    9

    • Similar Questions

    Explore conceptually related problems

    Simplify: (2x + 5y)(3x + 4y) - (7x + 3y)(2x + y)

    Let x,y and z are three positive numbers and P=(x+y+z)/(2); if (p-x):(p-y):(p-z)=3:5:7 then the ratio of x:y:z is

    If P={{:(y:y=(3x^(2)+5x+6)/(x)" is an integer and"),(" x is a prime number"):}} , then find n(P).

    If the distances of P(x, y) from A(5,1) and (-1,5) are equal, then prove that 3x = 2y.

    In equation 3x-4y=7 and 5x+3y=3 make the coefficient of x equal .

    Home
    Profile