In the figure, PQ is a parallel to ST and QRS = 40o. Find the value of x
A.
55o
B.
60o
C.
65o
D.
75o
Correct answer is A
From the figure, 3x + x - 40o = 180o
4x = 180o + 40o
4x = 220o
x = \(\frac{220}{4}\)
= 55o