Question

Two angles are supplementary. The measure of one is 80% of the measure of the other. Find the measure of both angles

Answer 1

80° and 100°

Explanation:

let 'x' and 'y' equal each angle

x + y = 180

now we could let y = .8x and use substitution to get this equation:

x + 0.8x = 180

1.8x = 180

x = 100

y = 80