One angle of a triangle measures 140°. The other two angles are in a ratio of 3:5. What are the measures of those two angles?

15 and 25

Step-by-step explanation:

the interior angles of a triangle, when added, = 180 ... so if one angle equals 140, then the other 2 angles have to measure a combined total of 40.

the other 2 angles are in a ratio of 3:5 ... added = 8

so one angle is 3/8 of 40 ... 3/8 * 40 = 120/8 = 15 <===

the other angle is 5/8 of 40 ... 5/8 * 40 = 200/8 = 25 <==