Question

[3] In the given fig. if Illm and za:<b=2:3then the value of y is
[a] 36
[b] 72
O [c] 18
O [d] 144​

Answer 1

$\huge\bold{\underline{\underline{{Answer:-}}}}$

Let the angle A and angle B be 2x and 3x

A/q,

✯2x + 3x = 180 (linear pair)

➛5x = 180

∴x = 36

➨It means ; angle A = 72°

⠀⠀⠀⠀⠀⠀angle B = 108°

✳Since, l//m and n is transversal.

So, angle A = angle Y (exterior opp. angles)

⛬ angle y = 72°

Hence, option b is correct.