Lines and are cut by a transversal

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

Problem

Lines

a

and

b

are cut by a transversal. One consecutive interior angle measures

(3y + 15)^\circ

and the other measures

105^\circ

. Find the value of

y

that makes

a \parallel b

. (a)

25

(b)

30

(c)

20

(d)

22