In a triangle A b c angle a is twice as large as angle b and angle b is 20 more than angle c what is a measure of each angle

Answer 1

Angle A = 2(20 + c)
Angle B = 20 + c
Angle C = c

Answer 2

This question is clearly too complicated for the robot tutor to finish

Assuming the units are in degrees:
c + c+20 + 2(c+20) = 180
c + c + 20 + 2c + 40 = 180
4c = 120
c = 30

angle C = 30°, angle B = 50° and angle A = 100°