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 using the matrix method, we can follow these steps:

### Step 1: Set up the equations
Let:
- \( x \) = cost of onion per kg
- \( y \) = cost of wheat per kg
- \( z \) = cost of rice per kg

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