Find the value of x in the diagram

MATHEMATICS

WAEC 2002

A. 31°
B. 35°
C. 37°
D. 41°

Correct Answer: B. 35°

Explanation

Sum of exterior angle of any polygon is 360^o

(2x+5)^o + 2x^o + (x-20)^o + x^o + (3x+10)^o + (x + 15)^o = 360^o; 10x = 350

x = 35°

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