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Three angles around a point on one side of a straight line are $(2 x - 10)$ deg, $(x + 30)$ deg and $(3 x + 10)$ deg. Find $x$ .

Class 9Pairs of AnglesGeometry — Lines and Angles

A23
B50
C27
D25

Step-by-Step Solution

Angles on a straight line sum to 180:

(2 x - 10) + (x + 30) + (3 x + 10) = 180, 6 x + 30 = 180, 6 x = 150, x = 25

.

Answer: D) 25

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