Another PSLE maths question..

This one stumped me for some time today, to the point I wanted to give up. My brain's not working alright.

Ali and Baba has some money. Ali has $200 more than Baba. Ali gives 60% of his money to Baba, and then Baba gives 25% of his money to Ali. Now Baba has $200 more than Ali. How much does Ali have at first?

It shouldn't take more than 10 minutes to solve this question if you know what to do. The answer is inside the comments link.