Raman mixed 8 kg of one variety of wheat with x kg of another. If the cost per kg of the two varieties are in the ratio 3 ∶ 2, the ratio of the selling price of the blended wheat per kg to that of the cost price of the superior variety of wheat per kg is 1 ∶ 1 and Raman makes an overall profit of 25% what is the value of x?