two angles on a straight line
That means they add up to 180
24 more than the other
(x + 24) + x = 180
solve
subtract 24 from both sides
156 = x + x
156 = 2x
divide both sides by 2
78 = x
That is the smaller angle
the larger angle is x+ 24
78 + 24
102 is the larger angle
Answers are B and D.
Hope this helps :)