Question

x/y = 4/5
x-30/y-30= 1/2

Chapter- Linear Equations​

Answer 1

Answer:

Let given two numbers are 'x' and 'y', So from first condition we get x:y = 4:5, x/y = 4/5 5x = 4y --- (1) -(1) And from second condition we get (x-30)/(y-30) = 1/2 x - 30y - 30 = 1/2, 2 x 60=y - 30, 2 x - y = 30 ---(2) x= 40 y = 50

Answer 2

Step-by-step explanation:

Disclaimer: There is error in the Q. In (II) there should have been 2x - 3y = 12

5x + 3y = 9 -----(I)

2x - 3y = 12 ----- (II)

Add (I) and (II)

7x = 21

x = 3

Putting the value of x = 3 in (I) we get

5(3)+3y=9⇒15+3y=9⇒3y=9-15=-6⇒y=-2

Thus, (x, y) = (3, -6).