Baniya sells two types of tea viz.Desi chai and Videshi chai. He sells Desi chai at Rs.18 per kg and incurs a loss of 10% whereas on selling the Videshi chai at Rs.30 per kg, he gains 20%.In what proportion should the Desi chai and Videshi chai be mixed such that he can gain a profit of 25% by selling the mixture at Rs.27.5 per kg?
1
3: 2
2
1: 5
3
5: 1
4
2: 5
5
None of these