Question

Please help I don't understand!

Answer 1

The answer is 25 trust me .

Answer 2

Answer:

25

Step-by-step explanation:

As the triangles within the bigger triangle are similar, the sides are in proportion.

⇒ $\frac{18}{30} = \frac{15}{w}$

⇒ $\frac{3}{5} = \frac{15}{w}$

⇒ 3w = 75

⇒ w = 25