The sum of the measures of the angles of a triangle is 180°

Question

Find the three angles of a triangle if one angle is 20° greater than the smallest angle and the third angle is twice the smallest angle.

Answer 1

three angles is a, b, c
a+b+c=180
one angle is 20 => a=20
greater than the smallest angle and the third angle is twice the smallest angle. => a is the smallest angles
the third angle is twice the smallest angle => c=2a = 40
=> b= 120