Do the trick

The noun trick is often associated with magic; a magic trick is an action which transforms something or someone, or makes someone or something disappear. The phrasal verb do the trick means to solve a problem or to change something, generally for the better. We usually use it with things, actions or processes, for example: I had a terrible headache but a couple of aspirin did the trick. Here are a few more examples:
Are you trying to lose weight? A few small changes may do the trick!
My car wouldn't start, but charging the battery did the trick.
If this doesn't do the trick, don't worry, we'll try something else.