Two angles of a triangle have ratio 5:3, and the third angle is the difference of the other two. Find the smallest angle of such a triangle in degrees. Pick one.
A) 16	B) 18	C) 20	D) 24	E) 36
The angles are 5x, 3x, and (5x-3x) = 2x [note that 2x is the smallest angle]   the angles of a triangle add up to 180, so   5x+3x+2x  (5 -3 )= 
<gadget id="calculator">  (5 -3 )</gadget>
<output>2</output>
2x [note that 2x is the smallest angle]   the angles of a triangle add up to 180, so   5x+3x+2x=180   10x = 180   x = 18   2x is the smallest angle, so  2*18= 
<gadget id="calculator"> 2*18</gadget>
<output>36</output>
36 is the smallest angle   36
<result>E</result>
Two angles of a triangle have ratio 5:3, and the third angle is the difference of the other two. Find the smallest angle of such a triangle in degrees.