The measures of two adjacent angles are and

MATHEMATICS · Single correct · CBSE · Mathematics · Lines and Angles · Lines and Angles

Problem

The measures of two adjacent angles are

(4x+20)^{\circ}

and

(2x+40)^{\circ}

. If their non-common arms form a straight line, find the value of

x

. (a)

15

(b)

30

(c)

20

(d)

10