DRDO Multi tasking staff Model paper 2

Given, 75% of (x – y) = 45% of (x + y)
⇒ 0.75 × (x – y) = 0.45 × (x + y)
⇒ 0.75x – 0.75y = 0.45x + 0.45y
⇒ 0.75x – 0.45x = 0.45y + 0.75y
⇒ 0.3x = 1.2y
⇒ y = 0.25x
∴ y = 0.25x or 25% of x.