Answer:
15,9
Explanation:
Segment: we solve, we don't know how much NP is, so we put it as "X". We also don't know how much PQ is, so we also put it as "X". and it tells us that all this is worth "31.8" and now it is an equation, in the end it would be that x is equal to "15.9", therefore NP is equal to "15.9" just like PQ.