218.723 yards I'm pretty sure that's what it is
I have no clue actually this is weird
i think the person below me is correct and the answer is 12
15-6x2=X im not sure if thats right but its what i got
The Solution.
Representing the problem in a diagram, we have
By formula,

In this case,

Substituting these values in the formula above, we get

Clearing the bracket, we get



Dividing both sides by 2, we get

Therefore, the correct answer is option C.