Answer:
D. 12.5
Explanation:
You can notice that ∠JMK and ∠JML are similar triangles.
That means that JM (from triangle on the left) is similar to KM (from triangle of the right)- the ratio between these must be:
, that means that we can multiple KM (from triangle on the right) by this ratio to get ML (from triangle on the right).
Now we add JM to ML to to get JL - so 8 + 4.5 = 12.5