Pls solve for k see picture below

Aportion of a line bounded by two points is defined as

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?