Find the angles (∠P, ∠Q, ∠R) of the triangle if a + b = 120° and a – c = 30°.

Find the angles (∠P, ∠Q, ∠R) of the triangle if a + b = 120° a

1.	Find the angles (∠P, ∠Q, ∠R) of the triangle if a + b = 120° and a – c = 30°.
A.	90°, 30°, 60°
B.	90°, 45°, 45°
C.	120°, 30°, 30°
D.	90°, 45°, 80°
Answer» B. 90°, 45°, 45°