A sugar dealer mixes two kinds of sugar together. One kind of sugar costing Rs. 25 per kg and other kind of sugar costing Rs. 40 per kg. He mixed in the ratio 2 ∶ 3 and sells the new mixture of sugar at Rs. 37 per kg. Find his profit per kg.
1
Rs. 3
2
Rs. 5
3
Rs. 4
4
Rs. 2
5
Rs. 1