If P + Q = 240 and R = 90, find the remaining angle of the quadrilateral PQRS.

If P + Q = 240 and R = 90, find the remaining angle of the quadrila

MCQOPTIONS

1.	If P + Q = 240 and R = 90, find the remaining angle of the quadrilateral PQRS.
A.	30
B.	40
C.	50
D.	60
Answer» B. 40