the measures of the angles of XYZ are in the ratio 4:5:6 what are the measures of the angles

the angle measures would have to add up to 180 as a general rule so make x the multiplier and:  4x+5x+6x=180 15x=180 x=12 so then  4(12)=5(12)+6(12)=180 48, 60, and 72