Solution:The pattern followed here is :(2nd number × 4) + (2nd number - 25) = 1st number
(125, 30) → {(30 × 4) + (30 - 25)} ⇒ 120 + 5 = 125
(615, 128) → {(128 × 4) + (128 - 25)} ⇒ 512 + 103 = 615
Similarly,
(225, 50) → {(50 × 4) + (50 - 25)} ⇒ 200 + 25 = 225
Hence, (225, 50) is the correct answer.