The cost of 4 kg onion, 3 kg wheat and 2 kg rice is Rs 60. The cost of 2 kg 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.

Explanation

To solve the problem of finding the cost of each item per kg (onion, wheat, rice) using the matrix method, we will follow these steps:

### Step 1: Formulate the equations
We are given three scenarios with their respective costs:
1. The cost of 4 kg onion, 3 kg wheat, and 2 kg rice is Rs 60.
2. The cost of 2 kg onion, 4 kg wheat, and 6 kg rice is Rs 90.
3. The cost of 6 kg onion, 2 kg wheat, and 3 kg rice is Rs 70.

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