Question 876890
three times the measure of an angle is 15 less than the measure of its complement. Find the angle.
let angle is X and complementary angle is 90-X
as per given conditions 
3X+15 =90-X
3X +x =90-15
4X= 75
X=75/4
X=18.75 degree 
Answer  18.75 degree   or   18 degree and 45 minutes