A mixture is obtained by mixing 12 kg of wheat with 18 kg of rice. Find the percentage of rice in the mixture.
60%
70%
50%
40%
Every year Aman consumes 250 kg wheat and 90 kg rice. The price of wheat is 20% of the price of rice and he spends a total of Rs. 3500 on wheat and rice per year. If the price of rice is increased by 20% then what is the percentage reduction of wheat consumption for the same expenditure of Rs. 3500? (Given that the price of wheat and consumption of rice is constant)
A trader mixes 26 kg of rice at Rs. 20 per kg with 30 kg of rice of other variety at Rs. 36 per kg and sells the mixture at Rs. 30 per kg. His profit percentage is:
The cost of 4kg onion, 3 kg wheat and 2 kg rice is Rs. 60. The cost of 2kg onion, 4 kg wheat and 6 kg rice is Rs. 90. The cost of 6 kg onion, 2 kg wheat and 3 kg rice is Rs. 70. Find cost of each item per kg by matrix method