Physics: converging lens question?

I think there is an error in your question. And, please ... for goodness sake, post the right question in the future or else it will be hard for nice people like me to answer it. I THINK ... actually not think, it should be definitely... the question is 25cm is used to form an image which is 10 times larger. NOT lather... spelling...come on ... Anyway, based on physics law, you must at least to be 25cm of focal length and 10 times larger. So, for you to say 20cm and 8 times is absolutely unacceptable and an insult to the modern world physics.