How many kgs. of wheat costing Rs 8 per kg must be mixed with 36 kg 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 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 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

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 kilograms of tea worth Rs 25 per kg must be blended with 30kg of tea worth Rs 30 per kg, so that by selling the blended variety at Rs 30 per kg, there should be a gain of 10%?

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 ?