Hi,
Three angles are complementary(their sum is 90°) The ratio of their measures is 2:3:5.
Let 2x, 3x, 5x represent the measures of the angles
Question states***
2x + 3x + 5x = 90°
10x = 90°
x = 9°
the measure of each angle: 18°, 27°, 45°
CHECKING our answer***
18° +27° + 45° = 90°