The second angle of a triangle is 20 degrees greater than the first angle. The third angle is twice the second. Find the three angles.

Question

I'm really bad at math, and I need some help understanding this.

Answer 1

Your three angles total 180, right?

s = f + 20

t = 2s = 2(f + 20) = 2f + 40

f + f + 20 + 2f + 40 = 180

4f + 60 = 180

4f + 60 - 60 = 180 - 60

4f = 120

4f/4 = 120/4

f = 30

s = 30 + 20 = 50

t = 2(50) = 100