RBI Grade B Officers 2011 feb Paper

(4) If the angle be 30°, then accordingto ratio,
Second angle = 60°
􀀿 Third angle = 180° – 60° – 30°
= 90°
If the given ratio be of two otherangles, then
x+2x=180°–30°=150°
⇒3x=150°⇒x=50°
∴ Second angle =2×50=100°
Hence, the largest angle= 90° or 100°