Question

An angle is 30° more than two times another angle. If two angles are supplementary, then the angles are
A 40°, 140°
B 60°,120°
C 100°, 80°
D 50°, 130°​

Answer 1

Answer:

Answer D

Step-by-step explanation:

angle A = 1x angle B = 2x +30 degreee

1x+2x+30 degree= 180 degree

3x + 30 degree = 180 degree

3x= 150 degree(180 degree - 30 degree)

x= 150/3

= 50

So

angle A = 1x = 50 degree

angleB = 2x + 30 degree = 100 + 30 degree

= 130 degree