[" Ex.4.How many kgs.of wheat costing Rs."8" per kg must be mixed with "36kg" uf "],[" rice costing "Rs" ."5.40" per kg so that "20%" gain may be obtained by selling the mixture "],[" at "Rs" ."7.20" per "kg" ? "]

How many kgs.of wheat costing Rs 8 per kg must be mixed with 36kg of rice costing Rs 5.40 per kg so that 20% gain may be obtained by selling the mixture at Rs 7.20 per kg?

How many kilograms of sugar costing Rs. 9 per kg must be mixed with 27 kg of sugar costing Rs. 7 per kg so that there may be a gain of 10% by selling the mixture at Rs. 9.24 per kg?

How many kilogram of rice among Rs. 18.30 per kg must be mixed with 126 kg of rice costing Rs. 8.55 per kg so that 20% may be gained by selling the mixture at Rs. 14.40 per kg? (A) 69 kg (B) 68 kg (C) 67 kg (D) 66 kg

How many kilograms of sugar costing Rs 9 per kg must be mixed with 27 kg of sugar costing Rs 7 per kg so that there may be a gain of 10% by selling the mixture at Rs 9.24 per kg? (a) 36 kg (b) 42 kg (c) 54 kg (d) 63 kg

30 kg of rice costing Rs.50 per kg mixed with 20kg of rice costing Rs.60 kg. What is the average cost of the mixture per kg ?

Coffe costing Rs. 250 per kg was mixed with chicory costing Rs. 75 per kg in the ratio 5:2 for certain blend. If the mixture with was sold at Rs. 230 per kg, find the gain or loss per cent .

10 kg of wheat costing Rs 12 per kg and 15 kg of wheat costing Rs 20 per kg are mixed. Find the average cost of the mixture per kg.