The other angle = x
1/2 of the other angle = x/2
3 times 1/2 of the other angle = 3x/2
20 degrees less than 3 times 1/2 of the other angle = 3x/2 - 20
Completementary angles add up to 90.
x + 3x/2 - 20 = 90
5x/2 - 20 = 90
5x/2 = 110
5x = 220
x = 44
Answer: The angle is 44 degrees.