help me solve this question from percentage chapter-mathematics?

Question

The weight of an iron bucket increases by 33.33% when filled with water to 50% of its capacity .Which of these may be 50% of the weight of the bucket when it is filled with water {assume the weight of bucket & its capacity in kg to be integers}..}. the correct answer: 5 kg...HOW...???????

Answer 1

You havent given us enough information. Clearly there are some other choices. You get the answer by trying all the answers.