The cost of 4 kg. onion ,3kg wheat and 2kg rice is rupes 60. The cost of 2 kg onion , 4kg wheat and 6kg rice is rupes 90. The cost of 6kg onion 2kg wheat and 3 kg rice is rupes 70. Find cost of each item per kg by matrix method.

Answer

cost of onions per kg =rupes 5
cost of wheat per kg =rupes 8
cost of rice per kg =rupes 8