IBPS PO Prelims Model Paper 7 with solutions

If the angle be 30°, then according to ratio, Second angle = 60°
∴ Third angle = 180° – 60° – 30° = 90°
If the given ratio be of two other angles, then
x + 2x = 180° – 30° = 150°
⇒ 3x = 150° ⇒ x = 50°
∴ Second angle = 2 × 50 = 100°
Hence, the largest angle = 90° or 100°