Calculate the value of y in the diagram

MATHEMATICS

WAEC 2003

A. 17
B. 34
C. 44
D. 45

Correct Answer: A. 17

Explanation

Sum of interior angle of the diagram equals 360^o

180^o - 5y^o + 136^o + 180^o + 180^o - 3y^o = 360^o

-8y^o + 136^o = 0

-8y^o = -136; y = 17

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