/gone
I'm getting arc PTQ is 218 degrees.
Since PQRS is a trapezoid, arcs PS and QR are equal, which leads to the quadratic y^2 + 4y - 60 = 0. The solutions are y = 6 and y = -10, so we take y = 6. Then arcs PS and QR are both 78, so arc PTQ is 360 - 78 - 78 = 202 degrees.
Well, 360-78-78=204, however 204 and 202 are both incorrect answers.
Since PQ is parallel to RS....then arc PS = arc QR
So
y^2 + 7y = 60 - 4y rearrange as
y^2 - 11y - 60 = 0 factor
(y - 15) ( y - 4) = 0
Then y =15 (reject) or y = 4 (accept)
So arc PS = arc QR = 60 - 4(4) = 44°
Then arc PTQ =
360 - 2(44) - 30 =
242°