Question 259870
The second angle of a triangle is 4 times as large as the first. The third angle is 80° more than the sum of the other two angles. Find the measure of the second angle.

Let x be the first angle above. Then since the three angles need to add up to 180:

x + 4x + (x+4x+80) = 180

Solve for x and the second angle is 4*x.