A mixture of rice is sold at `30 per kg. This mixture is made by mixing two types of rice at `21 per kg and `25.20 per kg. What is the ratio of these two types of rice in the mixture, if there is a profit of 25% on selling the rice?
1
2 ∶ 5
2
3 ∶ 2
3
1 ∶ 2
4
3 ∶ 5