Sugar worth Rs. 80 per kg and Rs. 50 per kg is mixed with a third variety in the ratio 1:2:3. If the mixture is worth Rs. 75 per kg, then what is the price of the third variety per kg?

A shopkeeper mixes two types of rice in the ratio 5 : 3, where one type costs ₹75 per kg and the other costs ₹85 per kg. Find the average price per kg of the mixture.

In what ratio (cheaper to dearer) should a grocer mix two varieties of pulses costing ₹18 and ₹22 per kg, respectively, to obtain a mixture worth ₹19.50 per kg?