Q. 154.3( 3 Votes )

In the adjoining figure, AOB is a straight line. If x : y : z = 4 : 5 : 6, then y = ?


A. 60°

B. 80°

C. 48°

D. 72°

Answer :

Let n be the common multiple



As we know that sum of all angles on a straight line is 180o.


4n + 5n + 6n =180o


15n = 180o


N = 12o


Y = 5n = 60o

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