Can someone help me and give me an explanation?

I was made for this question the answer is: w=8

Step-by-step explanation:

First you do: 150-30 since you want to cancel it out.

Then: 120/15=8

The 8

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

95.03 is the answer. hope this !