Original worth of the farm implements = Rs 6,500
Amount paid by Patel including commission = Rs 6,630
Commission = Amount paid by Patel including commission − Original worth of the farm implements = Rs 6,630 − Rs 6,500 = Rs 130
Commission is calculated on original worth; so, rate percent can be calculated on it.
Rate percent = ×100 = 2%
∴ Commission paid by Patel to agent = Rs 130
Rate percent = 2 %