A jar contains a mixture of Mango and Apple juice in the ratio of 3 ∶ 2. If 15 litres of juice is replaced by 15 litres of Apple juice, then the ratio of two juices becomes 1 ∶ 1. How much of the mango juice was there?
1
34 litres
2
12 litres
3
13 litres
4
16 litres
5
54 litres